#robotics Logs

May 04 2014

00:45 MrCurious if you want to get paid for doing nothing, run for congress, like everybody else
00:47 GargantuaSauce is your delldrone gig falling through?
00:49 MrCurious no, watching the POTUS crack jokes
00:49 MrCurious he has some really great writers
02:14 rue_shop2 :) I have the serial module installed in the usb bench power supply
02:15 rue_shop2 I need to make up a ttl isolator
03:02 rue_shop2 ok I think I designed it
08:02 GuShH_ Tom_itx: ever used a pneumatic rotary table? got some questions
08:52 Tom_itx nope
08:53 Tom_itx some guys in lcnc have as well as pneumatic rotary tool changers
08:57 GuShH_ Tom_itx: yeah I've seen the tool changer stuff some of them did
08:58 GuShH_ but I was wondering how the pneumatic rotary tables worked more than anything
09:00 GuShH_ watched a video someone made testing one, seems the entire plate lifts up, rotates, then falls back down pseudo locking itself in place, I wonder if they have backlash and if they can be reversed...
09:01 GuShH_ seems like a lot of extra parts for not a lot of extra functionality
09:01 GuShH_ unless you are doing a lot of repetitive indexing I don't see the point for having one at home
09:02 GuShH_ there's no "manual fallback" so without air, no tool.
09:09 Tom_itx most are worm gear or harmonic drive
09:10 Tom_itx unless you wanna make gears etc
09:13 Hyratel1 jesus H christ this is poor design
09:13 Hyratel1 the Saitek Cyborg EVO looks nice on your desk, even feels good in the hand. but as a flight stick? it's SHITE
09:13 Hyratel1 too much stiction, the centering is nonexistent, and it glitches near the ends of travel on the axes
09:14 Tom_itx sad gamer?
09:15 Hyratel1 yeah
09:16 Hukka Last year I had to replace my old optical MS stick
09:16 Hukka Found out that *still* most sticks use pots
09:16 Hyratel1 they're cheap
09:17 Hukka There was just one cheap (under hundred) with hall sensors
09:17 Hukka But that works fine
09:17 Hyratel1 and the cannister pots last longer than most people keep sticks
09:17 Hukka I didn't want one of those fancy hotas thingies
09:17 Tom_itx so make one from a wheelchair stick, they're inductive
09:20 Hyratel1 http://coolrobotprojects.blogspot.com/2013/06/proof-of-concept-cheap-diy-optical.html
09:20 Hyratel1 or roll one yourself
09:26 Hyratel1 ugh, this is really a nightmare
09:26 Tom_itx then stop playing games and do something productive with your life
09:27 Hyratel1 what if i wanted to use this for a robot controller? what then?
09:27 Tom_itx i may say the same thing
09:28 Tom_itx unless you plan to make that your field of work
09:29 Hyratel1 I fail to see your point
09:29 Tom_itx carry on then.
09:30 Hyratel1 it's a mechatronic thing that's not working as it ought
09:30 Hyratel1 isn't that a large part of Robotics?
09:31 Tom_itx disney thinks so
11:27 GuShH_ https://www.youtube.com/watch?v=iG3t0Q7UuCU
11:27 GuShH_ damn!
11:28 GuShH_ https://www.youtube.com/watch?v=aNbQH8XBgxQ
11:35 GuShH_ https://www.youtube.com/watch?v=NhkWINPRK3A
11:35 GuShH_ sexy
11:35 GuShH_ what is that tool made out of? that's amazing
11:37 GuShH_ what kind of taps are those? is it forming the thread with friction as well?
11:37 ShH_ s
12:33 Tom_itx cheapass production methods
13:14 rue_bed its a normal tap
13:14 rue_bed I'm guessing the bits are tungsten or ceramic
14:41 rue_more hmm, I have the sneaking suspicion that a script I ran ravaged my linux install to the point I'm gonna have a problem on the next reboot
14:46 GargantuaSauce maybe you should stop running everything as root? lol
14:47 GuShH_ rue_bed: no that wasn't a normal tap
14:47 GuShH_ Tom_itx: cheapass? it's much better than any insert crap you can come up with.
14:58 GuShH_ preload nut ready.. threaded shaft ready... bearings... nowhere to be found.
15:00 rue_more I wonder where a guy can get a set of steel toed loafers
15:01 rue_more I know they exist
15:01 ShH_ bl
15:01 rue_more I'm getting tempted to mod these servos into 4 wire, with a tap on the pot so I can do manual positioning
15:02 rue_more the machine shop at trade school was not impressed when a guy came in with a pair
15:03 rue_more huh, ebay prices for them aren't that bad
15:04 rue_more http://www.ebay.ca/itm/NEW-MANS-5-5M-LADIES-7-5M-FLORSHEIM-STEEL-TOE-LEATHER-WORK-SHOES-LOAFERS-/380683785537?pt=LH_DefaultDomain_0&hash=item58a2859541
15:05 rue_more heh, no steel toe slippers tho
15:05 GuShH_ hmm the tiny makeshift inside threading tool I made kept flexing, I never got to full depth but I formed the rest of the thread, worked fine. the bore was 12.5mm, naturally I didn't have a tool that small.
15:05 rue_more oooh I bet the slipper factory here could make me some
15:05 GuShH_ male threads are so much easier...
15:06 GuShH_ rue_more: why would you want a pair of those?
15:06 rue_more female threads are tempremental?
15:06 e_more
15:06 GuShH_ haha right
15:06 GuShH_ I should grind a tool out of hss, but it was a one time deal
15:07 GuShH_ so I used an old allen key (second time I do that actually, hey it works fine with aluminum)
15:07 rue_more GuShH_, post a pic of the internal thread holder you made I want to see
15:07 GuShH_ no holder, I clamped on top of some stock
15:07 rue_more I wanna see
15:07 GuShH_ but I'll take pics of the final threads later
15:07 GuShH_ and the "tool"
15:07 rue_more not ht threads, the tool
15:07 GuShH_ maybe in 10 minutes, I'm watching a video
15:07 rue_more sure sure
15:07 GuShH_ yes, the tool is an old allen key I cut short and ground into 60�
15:07 GuShH_ rue_more: hm?
15:07 GuShH_ watching this https://www.youtube.com/watch?v=Q7umzoHNh8M&feature=em-subs_digest
15:08 GuShH_ minute 17
15:08 rue_more I wonder how much they would charge me to take the steel from a worn out shoe and make a slipper
15:08 GuShH_ that's an impressive spread of collets
15:08 GuShH_ wish I had a set
15:08 GuShH_ he also got free machining steel, also wish I got some of that
15:08 GuShH_ I only have small chunks of that stuff (12Lxx)
15:08 GuShH_ it's amazing
15:08 GuShH_ and I can't find it anywhere, nobody seems to sell it around here
15:09 GuShH_ damn those are some nice threading heads
15:09 GuShH_ oh god I would buy everything
15:09 GuShH_ I WOULD NEVER LEAVE THAT PLACE.
15:10 rue_more so the secret to tables is to have lots of barrels
15:10 GuShH_ yes!
15:10 GuShH_ haha
15:10 GuShH_ I wonder if they're manufacturing in china now
15:10 GuShH_ hence, selling everything.
15:10 GuShH_ lol the cat's tail got caught on a belt
15:11 ShH_ s
15:11 GuShH_ if only I could find a place like that.
15:11 rue_more he goes so slow....
15:12 GuShH_ he's old.
15:12 GuShH_ he was complaining about the traffic previously, I counted 6 vehicles.
15:12 GuShH_ haha so excited about the steel.
15:12 rue_more i skipped to the middle...
15:13 GuShH_ those are some nice endmills :/
15:14 rue_more it was only a 1 min video for me, I dont think I missed anything important
15:14 rue_more on his royal blue swuade dress
15:14 GuShH_ you need to know how to skip to the good parts
15:14 GuShH_ lol
15:14 GuShH_ it's not his.
15:15 GuShH_ there's no such thing as NOS cutters here, they're either used or they're "brand spanking new" (and they're priced accordingly)
15:18 rue_more "your reamers were dull! I resharpened them for you!"
15:21 MrCurious resharpening bits ruins them if you do it wrong...
15:22 rue_shop2 so I got hte tumbler to the point it works
15:22 MrCurious balance issues, cut dimension issues
15:22 rue_shop2 so I'm grinding up some bentonite clay in it
15:22 GuShH_ MrCurious: which bits?
15:22 rue_shop2 but the motor needs more leverage
15:23 GuShH_ twist drills?
15:23 MrCurious router bits, end mills
15:23 GuShH_ are you the kind that throws away a 1 inch twist drill because it got "dull"
15:23 GuShH_ oh, you can't sharpen endmills easily at home.
15:23 MrCurious drills are easy to sharpen. may have misread the thread
15:23 GuShH_ but you can lap the edges most times
15:24 GuShH_ MrCurious: nah I was admiring the amount of NOS 2 fluted endmills the old guy bought for a few bucks a pop
15:24 rue_shop2 I dont want to be outside for the same reason I need to put a tarp on the tent frame I made
15:24 GuShH_ and thinking "I pay over 20 dollars a pop here"
15:24 GuShH_ rue_shop2: grass too sharp?
15:24 MrCurious sounds like argentina is a sourcing nightmare
15:24 GuShH_ it's foggy here and it's full of mosquitos, there shouldn't be any at this time but there are.
15:25 GuShH_ MrCurious: it is, but you can't source FMS where you live either, not unless you overpay by buying in small quantities from some reselling store.... which I could do if I asked around...
15:25 GuShH_ MrCurious: also, so third worldy of your country to flood up like that recently huh
15:25 GuShH_ no electricity...
15:26 GuShH_ makes you wonder, aren't we all the same in the end. assholes.
15:28 GuShH_ rue_shop2: ok found at least 3 makeshift tools out of chinesy allen keys, give me a few mins and I'll send you a pic.
15:28 GuShH_ I could do it with the tablet but I'm lazy.
15:28 MrCurious :D
15:28 Curious whispers rental property in
15:41 ShH_ whispers mrp
15:42 GuShH_ what's the point in buying an inside threading tool small enough for a 12mm bore, if you won't be using it more than once? plus I can grind one, I just don't feel like it.
15:42 GuShH_ got a box full of cobalt bits
15:42 GuShH_ takes a lot shorter to grind crappy mild steel than it does hss
15:52 GuShH_ rue_shop2: here! http://gushh.net/tmp/p_20140504_171412f.jpg the bigger one didn't fit (that one I made a long time ago for a similar project) so I made a smaller one, the other small one has a boring profile, not for threading. and the nut shows the end result, they work fine on a pinch, but it's full on ghetto. you can see the tiny allen in the center was all twisted up, stripped, etc. they were from a cheap set I was going to
15:52 GuShH_ throw away, but I figured out they could be repurposed as tiny boring tools for aluminum.
15:55 GuShH_ rue_shop2: here's the male thread, looks square due to the light but it's nice and pointy http://gushh.net/tmp/p_20140504_171653f.jpg the other surfaces were not turned by me, that's the shaft of a small drill press (made in china).
15:55 GuShH_ the relief is where the circlip went, I threaded that portion for a preloading nut instead.
15:56 GuShH_ very non standard thread and size, one off.
15:57 GuShH_ 0.75mm pitch or so, it's not even 15mm, some odd number...
15:58 GuShH_ rue_shop2: by comparison this is the smallest inside threading tool I have, which is a cheap ass brazed carbide insert, used it once... it chipped, I didn't care to grind it back to a point, won't be using it again. http://gushh.net/tmp/p_20140504_171723f.jpg
15:59 GuShH_ while taking the pics I noticed a tiny boring tool in the bits box with what looks like a 60 degree point, it's on the wrong hand side though, would have to turn the threads backwards and cut on the other side of the work if I used it for that
16:02 GuShH_ this is how I held the makeshift tool, it wasn't moving on the screw, but it was flexing given how shitty the material is. it is however a very bad idea to hold tools like that, although given the low speed and the fact that I was dealing with 6061, who cares.. http://gushh.net/tmp/p_20140504_171255f.jpg
16:02 GuShH_ I don't think the tablet likes my lighting
16:04 GuShH_ rue_shop2: happy? jeez.
16:04 GuShH_ I think If I keep "just rueing it" I'll end up hurting myself badly.
16:14 rue_shop2 cool
16:15 rue_shop2 why did you make a nut?
16:15 GuShH_ to preload the bearings
16:16 GuShH_ they are worn out (bad quality and lack of preloading, you don't really want deep groove bearings to go unloaded)
16:16 GuShH_ they sit right when you load them properly
16:16 rue_shop2 but you didn't want to mod it out of a link nut?
16:16 GuShH_ link nut?
16:16 rue_shop2 not available thread?
16:17 rue_shop2 those long nuts used to link allthread togethor
16:17 GuShH_ the only nuts I have were either too small or too big, and the stores are closed today
16:17 GuShH_ I did have hex heads from big bolts I've cut off, but no need to make this out of steel
16:17 GuShH_ very little tension and it's a one use deal
16:17 GuShH_ it just remains there until I need to replace the bearings again.
16:18 GuShH_ bigger drill presses have this from factory.
16:18 GuShH_ smaller ones don't, it seems.
16:19 rue_shop2 cool
16:19 GuShH_ the runout was so bad even with a center mark the bits tended to move around, so I took apart the quill, found out there's no preloading and the bearings are shot (gritty sound, they sometimes bind a little when you turn them by hand, lots of play)
16:20 GuShH_ they use two 6201-ZZ for the shaft...
16:21 GuShH_ I also drilled and tapped setscrews to a) provide some sort of "gib" adjust to the quill and b) have a lock, since it didn't have one before.
16:21 GuShH_ I'll replace the whole thing for a big old hunk of iron, if I ever find one in good condition.
16:24 GuShH_ all that "wear" for a few hours worth of use, thank you china.
16:36 rue_shop2 the tailstock?
16:45 rue_shop2 allen key eh?
16:46 rue_shop2 I have a pile of old allen keys
16:46 rue_shop2 ...
16:46 rue_shop2 twist the snot out of it to make it bolt down...
16:47 rue_shop2 rewind, I'm cutting HDPE
16:47 e_shop2 finds a peice of mild s
17:13 rue_shop2 the drive on this tumbler is way more trouble than I expected
17:30 GuShH_ rue_shop2: no, the wear on the drillpress quill, there's no bushing, just iron and steel rubbing without any brass or actual linear bearing, because... china.
18:31 rue_more hahaha
18:31 rue_more wow
18:31 Tom_itx what's so wowish?
18:32 rue_more his drillpress
18:32 rue_more GuShH_, you gonna put in a thrust bearing?
20:32 MrCurious 2 spark plugs and one coil on plug replaced
20:32 MrCurious 1 misfiring cyl solved
20:32 MrCurious 1 still toast.
20:32 MrCurious pulled the toast plug out after it saw a lifetime running time of 5 minutes
20:32 MrCurious came out gummed up with crud
20:33 MrCurious i believe the oil leak has been found
20:43 GuShH_ MrCurious: rings or gasket then
20:44 orlock i went to pick up an ebay purchase yesterday
20:44 GuShH_ MrCurious: how's compression on the bad cylinder compared to the others?
20:44 orlock the guy had some metal sculptures he had made lying around, one used some old conrods
20:44 GuShH_ lol
20:44 orlock MASSIVE things, apparently they were from some old tractor
20:45 ShH_ scored a tiny cut of what seems like cast iron
20:45 MrCurious suspect it is beyond my capabilities or willingness to repair
20:45 GuShH_ MrCurious: no compression tester?
20:45 GuShH_ I told you it would be the rings or the gasket...
20:45 MrCurious nope
20:45 GuShH_ but, do you have spark on the dead cyl?
20:45 orlock out 1997 subaru is leaking power steering fluid
20:46 GuShH_ orlock: seals
20:46 orlock i hate working on/in it
20:46 GuShH_ sadly that means purging first
20:46 orlock i changed the plugs once
20:46 orlock NEVER AGAIN
20:46 GuShH_ hah
20:46 GuShH_ why not?
20:46 GuShH_ that's the simplest job
20:46 orlock DOHC flat 4
20:47 GuShH_ yeah that's very asian innit.
20:47 orlock the plugs are completely horizontal
20:47 ShH_ wonders if the iron is white iron and whether hss will cut it or if carbide is the way t
20:47 orlock or german
20:47 orlock :P
20:47 GuShH_ on a lot of modern diesels the heater plugs are kinda horizontal...
20:47 orlock theres less than an inch of clearance between the inside of the fenders/wheel wells and the end of the plugs
20:47 GuShH_ as are injectors
20:48 MrCurious GuShH_: i am guessing the solid crud that came out on the new plug after it had been in for 5 minutes indicates spark is not the issue
20:48 orlock and they are down at the level of the wheels
20:48 GuShH_ MrCurious: no, that's build up
20:48 GuShH_ because of bad rings and or gasket is blown in that region
20:48 GuShH_ did it overheat?
20:48 GuShH_ detonation problems prior
20:48 orlock have to feed in the sockets bit at a time, undo it a few turns, re-assembele the socket bits, etc
20:48 MrCurious did it overheat how many times...?
20:48 orlock apparently most places will just lift the engine to change the plugs
20:48 GuShH_ the engine... did it ever suffer from overheating
20:49 GuShH_ ie. problems with thermostat, coolant
20:49 MrCurious you mean like do oil
20:49 MrCurious you mean like no oil
20:49 MrCurious that has been a recurrent issue
20:49 GuShH_ no, if there's a thermostat problem or check valve problem in the coolant circuit, most cars of that era will cook themselves.
20:49 orlock my other subaru is burning oil, i know it needs a topup when the oil light comes on during hard corners
20:50 GuShH_ MrCurious: smoke out of the exhaust? blue?
20:50 GuShH_ no oil means rings or gasket is worn on that cylinder, it's been burning it...
20:50 MrCurious yup
20:50 GuShH_ usually rings.
20:50 MrCurious pretty sure water pump is shot
20:50 MrCurious its on the list
20:50 GuShH_ ok that's very bad
20:50 MrCurious i am not good at maintenene
20:50 GuShH_ you change the pump with the timing belt change
20:51 GuShH_ and the belt tensioner
20:51 GuShH_ it's always sold as a kit, unless you are a cheap ass and only want to change the belt
20:51 MrCurious thats on the todo ist
20:51 GuShH_ MrCurious: it could be a pooped gasket or premature worn rings due to lack of lubrication and overheating.
20:52 ShH_ ends the online mechanic consulta
20:52 ShH_ sips
20:52 MrCurious yeah, rings scarry
20:52 GuShH_ it's actually a simple thing to do, but they charge a lot more because it sounds complicated.
20:53 GuShH_ the most complex part is bolting the head back in place, with new studs, following the right pattern, initial torque and final twist angle
20:53 GuShH_ problems on overheated engines... studs get stuck, often break
20:53 GuShH_ if it's been overheating you'll need to clean up the valves and cams
20:53 GuShH_ chances are it's all gummed up
20:54 GuShH_ and it's not getting oil up there
20:54 GuShH_ after that, check valve gaps, adjust if need be.
20:54 GuShH_ soo... it's going to cost you a few bucks, the guy should also lap the valves while he's at it
20:55 GuShH_ how much is the car worth? heh
20:55 MrCurious other than engine issues, it is a delux vehicle
20:55 GuShH_ it's at that point where it might cost more to fix it than it's worth
20:55 GuShH_ -almost-
20:56 GuShH_ MrCurious: I know it sucks but if that timing belt goes, say bye-bye to your valves, among other issues.
20:57 GuShH_ I've seen a timing belt failure, on an allegedly new timing belt (with less than 100 miles on it) ... not pretty.
20:57 orlock they get lonely
20:57 orlock the pistons and the valves
20:57 orlock they just want to cuddle
20:57 GuShH_ o.O
20:58 GuShH_ mhh good wine.
20:58 GuShH_ MrCurious: you may use my bicycle, it's dusty but it'll work.
20:58 GuShH_ I don't even know why I don't sell that thing
20:59 GuShH_ takes up space for no good reason.
20:59 GuShH_ ok this other chunk of metal is very strange... I'm thinking it could be cast zinc, but I'm not sure...
21:00 ShH_ is trying to source some cast iron
21:00 Curious starts some mood m
21:01 orlock GuShH_: what for?
21:01 GuShH_ MrCurious: lol
21:01 GuShH_ orlock: model IC engine
21:02 GuShH_ they call for cast iron for some of the parts... piston namely
21:02 MrCurious once the oil issue is resolved, then its timing belt water pump time
21:02 GuShH_ my magnum xl .46 has a steel sleeve and an aluminum piston, I believe... with rings, so I'm not sure why (again, I keep wondering) why cast iron is a must
21:03 GuShH_ MrCurious: make sure to check the thermostats
21:03 GuShH_ and for clogs in the system
21:03 GuShH_ because once the water pump impeller goes (the old metal ones tend to rust out) those chunks have to end up somewhere.
21:03 GuShH_ most new kits come with plastic impellers, but I think they still make them out of other materials.
21:04 MrCurious enough horror stories
21:05 GuShH_ no, it's a common fault.
21:05 GuShH_ and I should know first hand, all of this happened to my mom's honda.
21:05 GuShH_ even had to replace the radiator for an aluminum one, the original steel one began to leak and had a few obstructions, not worth it.
21:06 GuShH_ rust flakes everywhere.
21:06 GuShH_ orlock: if you look up the plans for the "boll aero" you'll see what I mean
21:06 orlock oh, nice!
21:07 Hyratel1 GuShH_, it's because cast iron is ductile
21:07 Hyratel1 but not the same way as steel
21:07 GuShH_ Hyratel1: I assumed it was due to heat expansion
21:07 GuShH_ I can't easily source cast iron stock
21:07 GuShH_ iron has some lubricating properties though
21:08 GuShH_ graphite related, forgot the details
21:08 Hyratel1 you said the pistons? or the piston rods?
21:08 GuShH_ piston and contrapiston
21:08 GuShH_ pretty sure they call for cast iron
21:08 Hyratel1 what's the contrapiston
21:09 GuShH_ compression adjustment for "diesel" model engines
21:09 GuShH_ a sleeve the is pushed up or down.
21:09 Hyratel1 oh
21:09 Hyratel1 i'm only familiar with gaoline/petrol
21:09 GuShH_ cylinder should be 12L14, which I can't source... that's free machining steel with lead, which is awesome but nobody sells it where I live.
21:09 Hyratel1 gasoline
21:10 GuShH_ this is a compression ignition model engine
21:10 GuShH_ http://modelenginenews.org/plans/BollAero18.pdf
21:10 GuShH_ whopping 1.8cc
21:10 Hyratel1 O_o
21:11 GuShH_ that's more than a Ford KA!
21:11 ShH_ g
21:11 Hyratel1 would that be suitable for running a dynamo?
21:11 GuShH_ it throws a pretty big propeller, so maybe
21:11 GuShH_ they are torquey little engines compared to glow plug ones
21:11 Hyratel1 because I have an ongoing project to build a 12v 4cycle portable generator
21:11 GuShH_ alas slower.
21:12 GuShH_ heh this is technicallly 2 stroke
21:12 Hyratel1 because I have an ongoing project to build a 12v 4cycle portable generatorin case the alternator goes out
21:12 GuShH_ yes piston and contra-piston "cast iron" doesn't say the type or anything else
21:12 GuShH_ conrod calls for 2024 T3 alu... which is odd
21:13 GuShH_ and the use of drill rod for the gudgeon pin is even worse, it's massively over engineered
21:13 GuShH_ but I guess it helps to have dissimilar metals there
21:13 Hyratel1 does that take its fuel neat, or mixed?
21:14 GuShH_ it's a custom mix it's not really diesel
21:14 GuShH_ and it does have a lot of oil in the mix
21:14 GuShH_ usually ether based with something to lower the ignition temperature
21:14 GuShH_ and castor oil
21:15 Hyratel1 so it wouldn't take red diesel neat
21:16 GuShH_ 1/4" x 32 thread... why not 1/4" x 20tpi...
21:16 Hyratel1 because one requirement for this project is it has to take its fuel "neat" so you don't ahve to worry about a mixing kit
21:16 GuShH_ model making bastards, always taking the hard path.
21:16 GuShH_ Hyratel1: get a commercial 4 stroke engine then heh
21:17 Hyratel1 GuShH_, yeah that's what the plan was
21:17 GuShH_ not sure on the smallest ones available.. they're usually in the 150-200cc range
21:17 GuShH_ which is quite powerful
21:17 Hyratel1 the hard part is getting one that's small enough to fit in a saddlebag with a dynamo AND takes gasoline neat
21:17 GuShH_ heh
21:17 GuShH_ they do make strimmers with tiny 4 stroke engines
21:17 GuShH_ but they cost.
21:18 GuShH_ crankshaft... stressproof steel "or ht bolt" lol
21:18 GuShH_ then prop driver "3/4 aluminum bar" seems so vague at times.
21:19 GuShH_ I'll probably convert it to metric and ajust it to what I have
21:19 orlock yeah
21:19 orlock not like its rocket science
21:19 GuShH_ the important part is keeping the ignition timing.
21:20 GuShH_ rocket science is simpler, this thing has a lot of tiny parts!
21:20 Hyratel1 eh.
21:21 Hyratel1 the only < 10CC engiens i can find require mixed fuel
21:21 Hyratel1 hah
21:21 Hyratel1 haha
21:21 Hyratel1 hahaha
21:21 Hyratel1 hahahahaha
21:21 Hyratel1 rockets have a lot of tiny parts
21:21 rue_more ...
21:21 GuShH_ nah it's usually just a nozzle, some fuel and a tube.
21:21 GuShH_ as far as models go.
21:21 Hyratel1 the Saturn V / F-1 starter was a startup of 13 consecutive miracles
21:22 GuShH_ of course these days they add electronics, off the shelf.
21:22 Hyratel1 ohhhh you mean model rocketry
21:22 GuShH_ but we're talking models!
21:22 GuShH_ this is a model engine, so model rockets would be a good comparison :)
21:22 Hyratel1 I'd like a scale Falcon 9 1st stage that can rockethover please
21:23 GuShH_ ask in the rocket fanboy channel!
21:23 Hyratel1 pffft
21:23 Hyratel1 it's actually more closely related to robotics than model rocketry
21:23 Hyratel1 esp if you're using Oxy-Acy
21:24 GuShH_ let's ask MrCurious, he probably has greasy hands, ideal for handling the oxygen!
21:24 ShH_ g
21:25 rue_more I never been able to set anything off cold blowing oxygen at it from the torch
21:25 rue_more but I been abel to make some glowing carbon white
21:25 GuShH_ rue_more: will you make a model engine?
21:26 rue_more ma just brought me some leather for the piston seal
21:26 GuShH_ good for honing ze machunin skillz
21:26 rue_more das ya
21:26 GuShH_ zehr gut.
21:27 rue_more its nin spek deutch
21:27 rue_more ist...
21:27 GuShH_ hail shitler!
21:28 GuShH_ there's actually a lot of very good model makers in Germany
21:28 GuShH_ but they are mainly focused on model trains
21:28 GuShH_ they are the kings of that.
21:28 rue_more everything made in germany is good, if its not, you get shot
21:29 GuShH_ I fail to see the point in making pneumatic engines though... it has to be IC for me.
21:29 GuShH_ lol
21:29 GuShH_ the r�hm chuck I got is amazingly good for the money
21:29 GuShH_ light hand force and it clamps better than a regular jacobs
21:29 GuShH_ I just need to get the right arbor so I can use it on the lathe
21:30 GuShH_ still got the generic 16mm one
21:30 GuShH_ complete crap.
21:30 GuShH_ if I had steel stock big enough I would try making my own
21:30 GuShH_ even though I'm scared of cutting morse tapers, specially since I don't have a taper attachment
21:30 GuShH_ but I think I can make one
21:31 rue_more you cant spin the upper slider?
21:31 GuShH_ ?
21:31 rue_more how amny axies if your apron
21:31 rue_more I have 3
21:31 GuShH_ yes I can cut a taper using the compound
21:31 rue_more the last one you can turn
21:31 GuShH_ but that's terrible by comparison
21:31 rue_more k
21:31 rue_more really?
21:32 GuShH_ I usually have mine for threading all the time, forgot the angle...
21:32 ShH_ looks i
21:33 GuShH_ rue_more: I don't think there's enough travel for a morse taper 2 arbor
21:33 GuShH_ there is for the J16, J1T, etc. portions
21:33 GuShH_ I would actually have to cut two different tapers on two different arbors.
21:33 GuShH_ I might just get a mt1 to mt2 adapter in the meantime
21:33 GuShH_ (they sent me mt1 arbors, the idiots)
21:34 GuShH_ 29.5 degrees is the compound angle for threading at 60� I forgot it was half of 60, I don't remember why it's not 30 though
21:35 rue_more hmm, well whats left of the day
21:35 GuShH_ I'm fine with threading operations, just scared of tapers at the moment.
21:37 GuShH_ rue_more: got rid of the 14MM wrench on the tailstock, turned a "handle" with a custom nut instead
21:37 GuShH_ works just like a cam lock, in that it only needs less than half a turn to lock and unlock
21:37 GuShH_ so quite happy with that.
21:41 rue_shop2 do take a pic of the old nut sometime :)
21:41 GuShH_ it was just an M14 black nut
21:42 GuShH_ I made one out of hexagonal 6061, I would have used steel but I didn't have any hexagonal stock on that size and quite frankly there's no need for steel, other than it would last longer.
21:42 GuShH_ so the hex gave me a flat where I could easily drill and tap M6 for the handle
21:43 GuShH_ which is made out of 2 parts, the shaft and the "ball end" which isn't actually a perfect sphere, but it's got a nice rounded contour
21:43 rue_shop2 I got hte other brake drum off the electric truck!
21:44 rue_shop2 it turns out the spiny thing was completely frozen
21:44 rue_shop2 all my efforts to get it to turn shook things enough the drum came off
21:44 GuShH_ is it actually an electric truck yet
21:46 rue_shop2 there is no gas engine
21:46 rue_shop2 (there is no engine)
21:47 GuShH_ ugh this pic shows defects that aren't there! it's actually a slight taper step on the shaft, because it gives a good feel, otherwise I would leave it straight, also out of focus but what can I expect from a tablet... http://gushh.net/tmp/p_20140504_171815f.jpg
21:47 rue_shop2 100% of the power systems on it are electric
21:47 GuShH_ slightly smaller and wimpy but works as a proof of concept
21:47 GuShH_ I might end up making a replacement out of steel later on, if need be. but since everything is aluminum I figured it was fine
21:47 GuShH_ it looks much better in person!
21:48 GuShH_ oh you can see the other handle I made, that's the carriage lock.
21:48 rue_shop2 I'd like to do that, but they ground the bed so badly there are 3 turns difference to lock the tailstock between the front and back of the bed
21:48 GuShH_ odd
21:48 rue_shop2 the underside
21:48 GuShH_ rue_shop2: there's a trick I didn't talk about
21:48 rue_shop2 they took atleast two passes at it
21:48 GuShH_ there are two springs around the M8 bolt (I didn't have one long enough)
21:48 rue_shop2 I want to do a camlock
21:49 GuShH_ that's what makes it unlock with less than half a turn
21:49 GuShH_ the camlocks use a spring as well
21:49 GuShH_ on the shaft, for the same reason
21:49 GuShH_ it works very well
21:49 GuShH_ I also had to turn the bolt slightly shorter, but that's only relevant to the nut I made, the M6 goes across both sides.
21:50 GuShH_ and the threaded portion is m6 stainless allthread
21:50 GuShH_ easier that way
21:50 GuShH_ tap twice, connect with rod.
21:50 GuShH_ I do want a camlock, I just don't have a milling machine to do it correctly.
21:51 GuShH_ the inside of the tailstock is not flat
21:51 GuShH_ mostly because it's a casting, everything needs to be tapered one way or another
21:54 GuShH_ still a few things to change... the gib screws for proper allen grub screws, better nuts to lock them, tailstock quill lock handle needs to be remade, the stock one sucks. I also need a better toolpost handle.
21:55 GuShH_ oh and there's an issue with the timing pulley... it wobbles on the shaft, might have to turn a new shaft.
21:55 GuShH_ I also noticed the bearings might need to be loaded a bit more, but I don't have the tools to adjust the nuts, might have to build a set
21:56 GuShH_ then, a proper 4 point mounting plate for the compound....
21:56 GuShH_ other than that, it runs fine heh
22:01 GuShH_ tiny rod turned out of free machining steel http://gushh.net/tmp/p_20140504_171752f.jpg the feed speed was very fast but you can barely see the marks, in fact you can see the reflection of the drill press shaft and some oil on the surface. Anyway that's now nice that stuff turns and it doesn't chip, it flakes. all it needs is a slight amount of cutting fluid, wish I could source bigger stuff in 12L14
22:01 GuShH_ it's almost like working with aluminum
22:01 GuShH_ sounds just the same.
22:44 Hyratel1 the Saitek Cyborg EVO is easily the worst designed for maintenance device I have ever had the misfortune to take a screwdriver to. numerous clips and catching-points that do not come apart with any reasonable amount of force, and do not reconnect in any rational way, as well as a number of blind clips and parts that are one-time pressfit in place.
22:45 rue_shop2 I'm thinking I could use something to identify metal grades
23:18 MrCurious some days git makes like it really wants to be your friend. other days, its like its that "friend" who constantly screws with you
23:25 LoRez you just have to know how to talk to git
23:26 GuShH_ yey found some cast iron rod, from a window weight. it machines very nice, of course all I got was a dull finish but it is iron, in fact it's oval not round... so quite a lot of material had to be removed, also very little to no rust and the spark test suggests it's some type of iron.
23:26 GuShH_ the other test piece turned out to be FMS, I thought it was iron but it was dirty zinc coated steel.
23:27 GuShH_ anyway that's enough material for the boll aero engine
23:27 GuShH_ rue_shop2: spark test, smell, and just machining it will tell you a few hints.
23:28 GuShH_ even if it's just pecking it with a drill
23:29 MrCurious maybe i try to --forcec git to do what i want, when i really just need to cherrypick the bits i cant live without
23:30 MrCurious i need a bell to go off any time i git reset --hard
23:32 LoRez or you should just stop doing bad things.
23:32 MrCurious i think if i got a little better about staying up to date...
23:32 MrCurious with upstream
23:32 MrCurious but i do wonder how i can be 52 commits behind and 43 commits ahead
23:36 rue_more GuShH_, my problem is that I keep taking things like cheap bolts that seem to be mild steel, and they turn out to cut hot and then harden up and destroy my bits
23:37 GuShH_ :/
23:37 rue_more its happening too often
23:37 GuShH_ what type of tooling?
23:37 rue_more HSS
23:37 GuShH_ I chewed up through grade 8 bolts yesterday, cut like butter
23:37 rue_more drils and lathe bits
23:38 GuShH_ Hmm I mostly use HSS now
23:38 rue_more yea, I was surprised how easily my bandsaw lopped the head off a grade 8
23:38 GuShH_ honed with a stone, but nothing too fancy
23:38 rue_more I think last week there for the first time I lost a cutter edge on the lathe to a workpeice
23:38 rue_more burned it off
23:38 GuShH_ what were you doing with the bolts?
23:39 rue_more *blink*
23:39 rue_more I'm usually better than that
23:39 GuShH_ I've broken carbide tips, but I blame the shitty quality.
23:39 rue_more it was sharp, when it was cutting (normal rates) the shavings were comming off blue/purple
23:39 GuShH_ then again I was probably turning too slow
23:39 rue_more yea, I put the carbide away for special things, too crumbly
23:40 GuShH_ oh that's another thing I noticed with this stuff, the shavings were either dusty or hard and brittle, but they didn't turn blue with the heat
23:40 GuShH_ and the oil was smoking.
23:40 rue_more I chipped 4 edges off various bits and decided that cutting slower with hss was more worth it
23:40 GuShH_ hrmm
23:40 GuShH_ lots of different grades in hss as well
23:40 rue_more some stupid stuff, like I cut overcentre and the upforce chipped an edge
23:40 GuShH_ some of my bits have odd grades I don't even know what they mean
23:40 rue_more *arg*
23:41 GuShH_ I use the biggest bits I can accomodate on the toolpost
23:41 GuShH_ helps a lot
23:41 rue_more and one edge was lost to plain old impact comming into a lop sided workpeice
23:42 GuShH_ I keep the hss bits inside the wooden box I got them in heh, out of respect for the deceased toolmaker guy.
23:42 rue_more and I noticed, becuase you cant sharpen the carbide as much, that I couldn't take shallow cuts, iirc 5 thou was min
23:42 GuShH_ you can get carbide very very sharp but it's not doable with conventional stones
23:42 GuShH_ I forgot the name, they're green... either that or diamond stones
23:43 rue_more I got special stones, havn't put them on yet
23:43 rue_more the green ones
23:43 GuShH_ too expensive, I didn't care to buy 'em
23:43 rue_more had to order them in
23:43 GuShH_ plus I would need another grinder...
23:43 GuShH_ I use both sides a lot.
23:43 GuShH_ oh I need to dress the wheels
23:43 GuShH_ can't buy dressers anywhere
23:43 GuShH_ but I've been told old masonry bits work on a pinch
23:43 rue_more ? want me to sell you one?
23:43 GuShH_ the carbide just chews through the stone
23:44 GuShH_ I was looking for a half karat diamond tipped tool but nobody sells 'em here
23:44 rue_more http://www.ebay.ca/itm/New-Superior-Portable-Oil-Feed-Diamond-Tipped-Glass-Cutter-Cutting-Art-Tool-/350706773496
23:44 rue_more "pen glass cutter"
23:45 GuShH_ hrm
23:45 GuShH_ I have one but it's got the wheels
23:45 GuShH_ need to see if they sell those then
23:45 rue_more oh, wait, maybe not, I thought that was the same as a dressing pen
23:45 GuShH_ nope
23:45 GuShH_ but you -could- use it to dress the wheels
23:45 GuShH_ all you need is a simple "depth stop" to guide and limit the motion
23:46 rue_more http://www.ebay.ca/itm/Diamond-Dresser-for-Grinding-Wheel-Lathe-/131176705314
23:46 rue_more how find a dresser do you wnat?
23:46 GuShH_ yeah those I've seen, but I'm not sure if they're better than the single diamond ones
23:46 rue_more http://www.ebay.ca/itm/Dressing-Grinding-Wheels-Single-Point-Diamond-Dresser-Tool-/390637063517
23:46 rue_more ^^ see why I got confused?
23:46 ShH_ can't order off eBay anymore th
23:46 rue_more I'll send you anything you want
23:47 rue_more dunno how you pay me..
23:47 GuShH_ how do they get the diamond stuck in there? welding of sorts?
23:47 rue_more prolly crimp it in
23:47 rue_more I'd expect its an artificial
23:47 GuShH_ I can use Western Union, problem is customs now... they make you fill out forms and it's more costly than ever.
23:47 GuShH_ yeah they are grown diamonds
23:47 GuShH_ industrial cheap stuff
23:48 rue_more http://www.ebay.ca/itm/Vintage-Desmond-0-Grinding-Wheel-Dresser-in-Box-/261470971905
23:48 GuShH_ still pretty hard
23:48 rue_more aparently I use vintage tools....
23:48 rue_more :/
23:48 GuShH_ nice
23:48 GuShH_ I like old tools... but even used, I couldn't find one.
23:48 GuShH_ that sucker is cast iron
23:48 rue_more I have one of those, bought it new
23:48 GuShH_ (I see a parting line) but maybe some primitive forge?
23:49 rue_more mine is cast
23:49 GuShH_ truth be told I don't know what they're called in Spanish, so maybe that's why I can't find them.
23:50 rue_more "decorative artifact, gift"
23:50 GuShH_ doesn't work anymore
23:50 rue_more "value: $0"
23:51 GuShH_ everything is stopped now
23:51 rue_more its not really a lie, I'm sure someone would use it for just that
23:51 rue_more do they charge you for them letting it past the border?
23:51 GuShH_ 50% plus 35% now
23:52 rue_more value: $0
23:52 GuShH_ of the actual cost
23:52 GuShH_ they look the stuff up
23:52 GuShH_ it's nuts.
23:52 rue_more do they open it?
23:52 GuShH_ you are forced to open it in front of them
23:52 GuShH_ but before you must declare it's contents and value
23:52 GuShH_ it's like nazi germany or worse.
23:53 rue_more I could paint it yellow with purle pokadots, then its art
23:53 GuShH_ lol
23:53 MrCurious any maven wizzards around
23:53 rue_more and if it looks like its done by a kid, its not worth much
23:53 GuShH_ I can't even buy automatic center punches off the shelf
23:54 rue_more maybe I should send you a cake with a file in it. :)
23:54 GuShH_ haha
23:55 GuShH_ it better be a non chinese file!
23:55 GuShH_ nicholson!
23:55 GuShH_ I might get a lot of used nicholson files (in good condition) but I'm not sure it's worth it
23:55 GuShH_ most are new, some are used
23:55 GuShH_ good files last a long time, unless they rub them against each other
23:56 GuShH_ unlike the china crap, it cuts fine a few strokes and then it's dull.
23:56 e_more thinks of his pile of f
23:56 rue_more :D yea, that would be dumb eh?
23:56 GuShH_ it is dumb to have them one on top of each other
23:56 GuShH_ then again the same is true for any cutter
23:56 ShH_ stares at his bag-of-
23:57 GuShH_ I need to make a holder of sorts, so they're all separate.
23:57 e_more thinks of his bin of lathe
23:57 rue_more yea, well duh
23:57 GuShH_ my bits are fine in the wooden box, they're neatly placed one on top of each other.
23:57 GuShH_ they stack just fine
23:58 rue_more so, want to send me your address and I'll send you the kids art you won in the online contest?
23:58 GuShH_ shitty pic but you get the idea http://gushh.net/tmp/p_20140504_172037f.jpg
23:58 GuShH_ not sure why there are cat hairs on some of the tools
23:59 GuShH_ that wooden box is probably 50 years old
23:59 GuShH_ I can't possibly throw that away! it says "bits" on the front, how neat is that.