#robotics Logs

May 17 2014

00:03 Hyratel or seasoned one?
00:24 MjrTom how many light bulbs does it take to change a robot?
00:26 rue_more just one.
00:26 rue_more esp if its BLUE
00:26 MjrTom ... but the robot has to WANT to change
00:26 rue_more well that a matter of state
04:32 joga anyone know what's up with openni/primesense/etc after they were acquired by apple? ie. I would need depth sensors for a (non-robotics related) project rather soon but seems that the new kinect hasn't been reverse engineered yet, primesensors are not available and the old kinects...well they might work for the prototype
04:33 joga seems openni.org has also been taken down, also primesense.com
04:34 joga has someone used the Asus Xtion sensors, are they ok enough? I would just need basic hand gestures like waving left/right and perhaps a couple other gestures
05:38 password2 i hate remote devices that shutdown geysers our municipality installed
05:40 password2 i should build a jammer for it
05:50 password2 oops , wrong room
05:50 password2 meh
05:57 SquirrelCZECH I suppose flexible shafts create some sort of backlash?
05:57 SquirrelCZECH something like this http://www.gme.cz/img/cache/800x600/732/008/ohebna-hridel-proxxon-micromot-110-p-28620-obrazek-2.jpg ...
08:25 Tom_shop to an extent they do yes
10:18 GuShH rue_more: seems there's no waiting period on castings in china, they go straight to machining once they're cold enough to the touch, if done inhouse or shipped right away... that would explain some of the warpages
10:21 GuShH some are cooled with water, gasp.
10:22 GuShH is this the result of not understanding the process, or them trying to churn out as much shit as people are willing to buy?
10:36 skilz http://www.embeddedarm.com/software/arm-netbsd-toaster.php
10:36 skilz Is this easy to do?
11:36 rue_more you do not need an arm to make toast, even a 4 bit, 1Mhz controller could do it
11:38 rue_more ..."Howdy doodly do. How's it going? I'm Talkie, Talkie Toaster, your chirpy breakfast companion. Talkie's the name, toasting's the game. Anyone like any toast? "
11:42 rue_more "I see a saw!" "you have been playing with time travel again havn't you?"
15:13 GargantuaSauce got a nice set of locking pliers now
15:13 GargantuaSauce and man was i ever missing out
16:03 robotustra_ GargantuaSauce: I want a 3D printer with XY moving like this https://www.youtube.com/watch?v=dnixuCu49o4
16:11 GargantuaSauce sounds like a 5-digit project
16:11 GargantuaSauce also probably infeasible because there's no path for the filament
16:12 GargantuaSauce that design is damn cool and a favourite of mine too though
16:15 LoRez there's a path for the air. might need longer downshafts out of the servos, but one of those tubes would work to feed it filament
16:16 GargantuaSauce air can bend much more easily than filament
16:17 LoRez it can. I'd be more concerned with its ability to maintain straight paths in its entire working envelope
16:55 GuShH GargantuaSauce: yey for tools!
16:55 GuShH went to an antique faire today... only about 10 old tools, nothing worth buying sadly.
16:55 GuShH I was hoping for some useful stuff
16:55 GuShH I think my fault is going to an antique place... I should find other sources heh
16:56 GuShH holy crap this exists? http://toolmonger.com/2007/06/11/adjustable-wrench-locking-pliers-stanleys-maxgrip/
16:56 GuShH I want it!
17:00 RifRaf yep makes sence, stop the stupid shifter going loose
17:00 GuShH exactly
18:26 robotustra_ GargantuaSauce: I think there is a way to put filament there
18:26 robotustra_ boden for instance
19:40 rue_more ooo parallel
19:40 rue_more ok, groceries
20:24 RifRaf more colours http://imgur.com/MrxIB1t
21:00 GuShH RifRaf: lol @ the subject
21:00 GuShH nice work
21:03 RifRaf had to get an idea to use the colours i had
21:07 theBear i didn't know marley was into plastic printing
21:08 RifRaf theBear, he needed a business card is all, had to take what was available with current technology
21:10 Hyratel GuShH, have you eve trued an iron skillet?
21:10 Hyratel or seasoned one?
21:10 RifRaf against the light so you can see through it http://imgur.com/yHmxPfD
21:11 RifRaf off to drink beers in the sun now and get some light on myself
21:11 theBear heh
21:12 theBear i err, "seasoned" skillets in my time, tho i gotta admit, as nonstick surfaces get less fall-offey and tougher, and china makes everything cheaper, that i tend to reach for a nonstick over iron most times
21:18 GuShH Hyratel: not in the mood for trolling sorry
21:19 GuShH plus I don't know how seasoning a skillet can possibly be relevant to robotics or the making of.
21:19 ShH nudges the
21:19 Hyratel it's related to surfacing and preserving cast iron, which seems to be one of your departments of study, at least by extension
21:20 GuShH on iron tools, I've burnished them (I'm not sure that's the right term) with oil and heat
21:20 Hyratel what kidn of oil was it?
21:21 GuShH get it black hot, apply oil with a rag, reheat, reapply, etc.
21:21 GuShH linseed, but motoroil works as well
21:21 GuShH then the final layer is beeswax, to seal it and give it a nice shiny surface
21:21 Hyratel because the "right" oils for seasoning are ones with a high "iodine number" which follows from the degree of polymerisation they undergo when heated to smoke point
21:21 GuShH gets you anywhere from brown to black finish
21:21 theBear in recent years i used motor oil for all kinds of things
21:21 Hyratel yeah, linseed/flax is the 'right stuff' oil
21:22 GuShH theBear: except cooking, I hope
21:22 GuShH :P
21:22 Hyratel in terms of polymer hardness it goes Linseed/flax > bacon grease > soybean oil
21:23 Hyratel bacon grease makes a good basecoat for iron cookware because it goes on thick, giving you a leveller surface if the underlying iron is uneven
21:23 GuShH lard is good stuff
21:23 GuShH also used as a cutting fluid
21:23 GuShH it's just that it goes rancid.....
21:23 Hyratel really? didn't know that
21:23 Hyratel also ew
21:23 Hyratel if you season properly, it won't
21:23 GuShH back in the day that was the defacto cutting fluid for machining steel
21:24 Hyratel seasoning is degrading the oil thermally which causes it to polymerise into a hard finish
21:24 theBear nah., butter is for cooking anything that isn't super hot
21:24 Hyratel do you have any cast iron cookware?
21:24 GuShH yes but a good portion flings and falls off
21:24 rue_more the shop fridge has beer and lard in it!?
21:24 GuShH without ever being burnt
21:24 Hyratel ehwhat?
21:24 GuShH I do
21:24 Hyratel in machining?
21:24 theBear seriously ? lard works for cutting compound ?
21:24 GuShH yes
21:24 GuShH yes!
21:25 theBear ooh
21:25 Hyratel oh. if you're having rpoblems with runoff, you're glopping it on way too thick
21:25 Hyratel wrt seasoning iron
21:25 GuShH they say vinegar is also a good cutting fluid for stainless steel
21:25 GuShH never tried.
21:25 GuShH oh, no... I don't have any new iron cookware
21:25 theBear it's a porous surface and yer rubbing a bit of oil into it so other stuff like oxygen doesn't go in there, it ain't rocket science
21:25 GuShH it's all old and seasoned
21:25 Hyratel theBear, what?
21:26 Hyratel no, it is actually pretty compex
21:26 GuShH the oil kind of barnishes
21:26 Hyratel no...
21:26 Hyratel I looked this up
21:26 theBear we don't need a step by step on how to surface an olde world pan technology
21:26 Hyratel excuse u
21:26 GuShH theBear: they will teflon coat anything these days
21:26 GuShH for a price.
21:26 GuShH you could have nonstick shovels!
21:26 ratel beats theBear with https://dl.dropboxusercontent.com/u/33593534/images/cast%20iron/IMG_5794.JPG
21:26 theBear even a puppy ?
21:27 GuShH your socks!
21:27 GuShH no, I don't think so
21:27 theBear woah ! nonstick socks ! it'd be like iceskating all the time !
21:27 GuShH eek
21:27 theBear sweet jesus ! yer gonna squash yer cooker if you keep putting pans like that all up on it
21:27 GuShH Hyratel: polymerizing eh...
21:28 Hyratel GuShH, yeah
21:28 GuShH there's something wrong with that picture... no food.
21:28 Hyratel ... fiiiiine
21:28 Hyratel https://dl.dropboxusercontent.com/u/33593534/images/cast%20iron/IMG_5857.JPG
21:28 GuShH I actually meant to say burnishing.
21:29 GuShH which is what I described for iron tools
21:29 GuShH that seems raw!
21:29 GuShH just the way theBear likes it
21:30 Hyratel theBear, you're so disparaging, I'd like to see you finish an iron skillet so it has a glassy fisnish that stands up to scraping with a sharpened spatula?
21:30 Hyratel the higher the iodine number, the more polymer crosslink potential the oil has.
21:31 GuShH the iron whisperer
21:31 Hyratel the smoke point temperature doesn't have to be high
21:31 Hyratel oh shush
21:31 ShH r
21:31 Hyratel this is stuff I looked up and it works very very well
21:32 Hyratel I enjoy cooking on cast iron, and the results for this speak for themselves
21:32 GuShH ze iron monger
21:32 GuShH try cooking on stones!
21:32 Hyratel 'meh' finish https://dl.dropboxusercontent.com/u/33593534/images/cast%20iron/IMG_5946.JPG
21:32 GuShH fun stuff
21:32 Hyratel mirror like finish https://dl.dropboxusercontent.com/u/33593534/images/cast%20iron/IMG_5947.JPG
21:33 Hyratel woops, got the links backwards
21:33 GuShH I can see machining marks!
21:33 GuShH this iron looks chinese
21:33 rue_more I think he means the spoon
21:33 GuShH lol
21:33 Hyratel -47 is one I've been working on, -46 is a high end Griswold
21:34 GuShH rue_more: take one for the team, try and use lard the next time you machine some steel
21:34 Hyratel https://dl.dropboxusercontent.com/u/33593534/images/cast%20iron/IMG_5916.JPG
21:34 GuShH I don't have any around at the moment
21:34 rue_more GuShH, dont have any, is cocconut oil close enough/
21:34 rue_more ?
21:34 Hyratel same one as -47, I had to sand it level because the outside was so uneven
21:34 GuShH nope
21:34 GuShH but do try it
21:34 rue_more bacon grease?
21:34 GuShH might smell interesting.
21:34 GuShH yes bacon grease should work
21:35 rue_more mmm shop will smell good
21:35 GuShH also, might smell funky.
21:35 GuShH lol
21:35 rue_more like minds
21:35 rue_more I have to go more more steel
21:35 rue_more on tuesday an excavator is comming to destroy the yard
21:35 GuShH "a new excuse to work with steel, bacon"
21:35 robotustra_ hm
21:36 GuShH damn skillet snobs...
21:36 ShH points at Hyr
21:36 GuShH Is cooking a hobby or a profession for you?
21:36 Hyratel hey, I like using it, so I learned to maintain it
21:36 Hyratel hobby
21:36 GuShH which is fine!
21:37 GuShH I need to get me a wok
21:37 Hyratel we got some skillets from a church yardsale and the floors were just ... sticky
21:37 Hyratel I had to scour them down almost to bare metal
21:37 GuShH holy stickiness
21:37 robotustra_ I tried to season a frying pan but didn't succed
21:37 Hyratel robotustra_, how did you do so?
21:37 Hyratel there's two general ways to do it
21:37 Hyratel the stovetop and the oven
21:37 robotustra_ as written in the instruction
21:38 Hyratel that tells me nothing
21:38 GuShH let me guess, oven for the noobs
21:38 robotustra_ heat and cover with oil
21:38 Hyratel 'cover with oil'
21:38 robotustra_ I don't remember details
21:38 ShH covers robotustra_ in way
21:39 ShH pokes a hole on Hyratel's favorite ski
21:39 robotustra_ but I think that the casting was too rugh
21:39 Hyratel you want to heat it up enough so the pores in the metal drive the air out so the oil can capilary in, and then heat it to the smoke oint *while wiping it out*
21:39 ratel bashes GuShH over the
21:39 ShH gets an erec
21:39 Hyratel rough casting? ew
21:39 Hyratel https://dl.dropboxusercontent.com/u/33593534/images/cast%20iron/IMG_5813.JPG
21:39 GuShH must have been a russian frying pan
21:40 robotustra_ it was written that it's already seasoned
21:40 Hyratel I'm *still* trying to level this one with seasoning
21:40 robotustra_ but meat was steacking to it
21:40 GuShH get a surface grinder!
21:40 ShH g
21:40 Hyratel I don't trust my own finishing to cook without oil
21:40 robotustra_ yesm the surface was like this
21:41 GuShH http://www.cjprecisiontoolgrinding.com/ShopPics/surface%20grinder.jpg
21:41 Hyratel this square skillet I think is pure chinesium
21:41 robotustra_ not smooth
21:41 Hyratel https://dl.dropboxusercontent.com/u/33593534/images/cast%20iron/IMG_5858.JPG
21:41 Hyratel you can see the flow marks in the metal here
21:42 robotustra_ covered with carbon film already
21:42 Hyratel what
21:42 Hyratel the black on an iron skillet isn't carbon, it's black iron oxide
21:43 robotustra_ did you make a spectroscopic analysis?
21:43 robotustra_ I'm pretty sure that it's a carbon products
21:44 robotustra_ becayse we did such films on my faculty
21:44 Hyratel consider this then: there was surface rust on a skillet and I applied oil over that rust, and seasoned it. that area turned black. I applied oil and seasoned over freshly sanded metal. the coating was amber
21:45 Hyratel https://dl.dropboxusercontent.com/u/33593534/images/cast%20iron/IMG_5916.JPG
21:45 Hyratel lemme get 'after' pics
21:45 robotustra_ ferrum oxide is not of black color
21:45 robotustra_ mey be there is an oxide there
21:45 robotustra_ but also should be a carbon
21:46 botustra_ syspect Hyratel is a fe
21:46 robotustra_ suspect
21:47 robotustra_ long silence is a sign of confirmation
21:48 GuShH robotustra_: highly irrelevatn
21:48 GuShH irrelevant*
21:48 GuShH cold fingers, went outside to listen to a live rock band playing a couple houses down the street heh
21:48 Hyratel nope, dude
21:48 GuShH I'm only aware of one dudette here
21:49 Hyratel also I went to get relevant pictures of the skillet
21:49 robotustra_ I tried to wind a flat coil today
21:49 GuShH for?
21:49 robotustra_ fot my physics experiment
21:50 robotustra_ didn't succseed
21:50 robotustra_ wire is 0.2mm
21:50 GuShH meh
21:50 GuShH I need a glass of scotch
21:50 Hyratel robotustra_, there may be carbon buildup *in the life of* an iron skillet, but seasoning is not carbon buildup
21:50 robotustra_ I need to make a pan coil
21:50 Hyratel https://dl.dropboxusercontent.com/u/33593534/images/cast%20iron/IMG_6881.JPG
21:51 Hyratel https://dl.dropboxusercontent.com/u/33593534/images/cast%20iron/IMG_6882.JPG
21:51 Hyratel second pic is detail of a spot where the finish abraded through to bare metal and I had to reapply seasoning
21:53 robotustra_ ok, tell me the approximate formula of oil and the chemical reaction which are happen during seasoning
21:53 ShH y
21:53 Hyratel are you trying to logical fallacy me into a corner?
21:53 Hyratel because it's tiresome
21:54 Hyratel and if you do get carbon buildup, it's prone to flaking off
21:54 Hyratel you get a lot of sooting on the bottom of iron that gets used on gas stoves
21:55 Hyratel but I don't see where you'd wind up with sooting on the *inside*
21:58 robotustra_ there is no logic here, just chemistry
21:58 Hyratel falacy. chemistry is logic
21:59 robotustra_ ok, as you wish
22:00 robotustra_ I teached stupids for 10 years, I have had enough of it
22:00 Hyratel now, where would carbon buildup come from on the interior of a skillet
22:09 robotustra_ do you know what is cast iron?
22:09 Hyratel yes I do.
22:10 robotustra_ Carbon (C) and silicon (Si) are the main alloying elements, with the amount ranging from 2.1–4 wt% and 1–3 wt%, respectively.
22:10 robotustra_ and some carbon comes from oil
22:11 Hyratel the oil doens't turn itno carbon, it turns into a translucent varnish
22:11 robotustra_ carbon goes out to the border of iron grains
22:11 Hyratel https://dl.dropboxusercontent.com/u/33593534/images/cast%20iron/IMG_6881.JPG
22:11 robotustra_ https://dl.dropboxusercontent.com/u/33593534/images/cast%20iron/IMG_6881.JPG
22:11 Hyratel anywhere I've had to cut down to bare metal, the resulting seasoning finish has had that tint
22:12 Hyratel the black is the low spots. I sanded that level because it had huge gaps over the burner and didn't sit flat
22:13 robotustra_ I think black it could be conjunction of ferrum oxide + some carbon derivatives
22:13 Hyratel https://dl.dropboxusercontent.com/u/33593534/images/cast%20iron/IMG_6882.JPG
22:14 Hyratel https://dl.dropboxusercontent.com/u/33593534/images/cast%20iron/IMG_5916.JPG
22:14 robotustra_ at high temperature it can loose hydrogen and react with ferrum oxide
22:15 Hyratel apologies for the fuzzy image but my hand shook and the lighting was marginal on #5916
22:15 Hyratel I neglected to get a 'before' on that one - but it was extremely irregular
22:16 Hyratel beltsander ftw
22:16 robotustra_ and after seasoned?
22:17 robotustra_ brown stuff it's a not so burned oil
22:17 robotustra_ black - is a a oil which lost a lot of hydrogen
22:17 Hyratel you don't *want* to burn the oil
22:18 robotustra_ it will happen during cooking
22:18 Hyratel the smoke point is where polymerisation happns
22:18 robotustra_ by reheating the pan
22:18 Hyratel eh?
22:18 GuShH not a lot of hydrogen in africa huh
22:18 robotustra_ ok
22:18 robotustra_ Hyratel: do you know what is hydrogen?
22:19 Hyratel please do not patronise me
22:19 robotustra_ I just what to know if we are speaking about the same things
22:19 GuShH Hrmm I wonder if jacobs makes J33 chucks
22:20 Hyratel I'm tlaking about the process of seasoning does not inherently develop a film of carbon blakc on the surface of the iron
22:20 GuShH ok they do.
22:20 GuShH clearly I forgot J stood for Jacobs, but I thought JT was for their tapers
22:20 Hyratel if carbon black is present, it's more likely an inclusion from an outside source
22:20 robotustra_ I told that it's not pure carbon
22:20 robotustra_ sure
22:21 Hyratel so.. what *were* you trying to say
22:22 Hyratel clearly the standard process of seaoning and cooking deosn't degrade the underlayment coatings enough (in fairly few heating cycles) to present carbon black
22:22 Hyratel as shown by the amber varnish coat I showed
22:22 Hyratel however, allowing the iron to flash-rust and then seasoning it as such will turn the rust black
22:22 robotustra_ FeO is thermodynamically unstable below 575 °C, disproportionating to metal and Fe3O4
22:22 robotustra_ FeO is black
22:23 Hyratel is it stable in an anoxic environment? (eg, sealed behind the varnish)
22:23 Hyratel and heated
22:23 robotustra_ Controlled oxidation of Fe3O4 is used to produce brown pigment quality γ-Fe2O3
22:24 robotustra_ so, brown color can be a Fe2O3
22:24 Hyratel what's 'artillery gold', ie red flash rust?
22:25 robotustra_ but there is NO stable ferrum oxides of black color at normal conditions
22:25 Hyratel what are normal conditions?
22:25 robotustra_ More vigorous calcining, (roasting in air), gives red pigment quality α-Fe2O3 (hematite)
22:25 robotustra_ atmospheric pressure
22:25 Hyratel room temperature with an oxic atmosphere?
22:25 robotustra_ yes
22:25 ace4016 Fe2O3 is usually red oxide; Fe3O4 is black oxide. also, what's going on here?
22:25 robotustra_ FeO is unstable
22:25 robotustra_ Fe3O4?
22:26 ace4016 http://en.wikipedia.org/wiki/Magnetite
22:26 Hyratel I've seen Fe3O4 noted as being an amalgan of FeO and Fe2O3 where Fe2O3 is heated in an anoxic environment
22:26 Hyratel amalgam
22:26 ace4016 are you trying to season your cast iron?
22:27 Hyratel that's what the topic is, yes
22:27 Hyratel and robotustra_ 's position is that the black finish beneath the seasoning is carbon deposits
22:27 ace4016 Hyratel, http://en.wikipedia.org/wiki/Bluing_%28steel%29
22:27 ace4016 :D
22:28 ace4016 Hyratel, i wouldn't use the chemicals they mention in there, but the process of rust bluing might get you a black cast iron back
22:29 ace4016 if you're just reseasoning after neglect, i think stripping the layers of oil off (will require kitchen degreaser), some vinegar+metal brush to get rid of the oxides, and a few layers of oil being burned into the metal (seasoning) will restore it
22:30 ace4016 though it might turn to the metallic silver color
22:30 Hyratel you dont' burn the oil
22:30 Hyratel that's the common misconception
22:30 Hyratel https://dl.dropboxusercontent.com/u/33593534/images/cast%20iron/IMG_6881.JPG
22:30 Hyratel https://dl.dropboxusercontent.com/u/33593534/images/cast%20iron/IMG_6882.JPG
22:30 ace4016 i'm aware :P
22:30 Hyratel oil smoking vs burning
22:30 ace4016 easiest description though
22:30 robotustra_ ok, so it's written that it's a different ferrim oxides
22:31 robotustra_ but oil improves the layer
22:31 robotustra_ so, it's not a carbon film
22:31 Hyratel tried to tell ya
22:31 Hyratel but you had to go all "but i'm a chemistry teacher!" on me
22:31 robotustra_ ok but strange
22:32 robotustra_ I'm a physisict
22:32 robotustra_ physicist
22:32 Hyratel you said FeO is unstable in an oxidising atmosphere below 570*F
22:32 robotustra_ not chemistry teacher
22:32 robotustra_ it's written in wikipedia
22:32 Hyratel is its stability functional with temperature? or is it a threshold
22:33 robotustra_ it's a threshold
22:33 Hyratel mmm
22:33 robotustra_ and the low pressure
22:33 Hyratel what about Fe2o# 's stability wrt temperature?
22:33 robotustra_ it's stable
22:33 Hyratel ... sticky shift key
22:33 robotustra_ and Fe3o4 is stable also
22:34 robotustra_ and it's close to black color
22:34 robotustra_ so, it's a mixture of oxides actually
22:34 Hyratel and viewed through the amber filter of oil varnish would be indistinguishable from black
22:34 Hyratel didn't I say "amalgam" at one point?
22:34 ShH needs a shot of scotch after reading all this
22:35 Hyratel ace4016, I'm a bit of a fan of cast iron cookware
22:35 botustra_ wish GuShH's eyes b
22:35 GuShH This is sad.. I can't source B12 to MT2 arbors
22:35 Hyratel https://dl.dropboxusercontent.com/u/33593534/images/cast%20iron/IMG_5794.JPG
22:35 GuShH robotustra_: idiot
22:35 GuShH robotustra_: cunt, I hope yours never do.
22:35 robotustra_ parade
22:36 GuShH until recently I was recovering from an eye injury
22:36 GuShH you dipshit
22:36 robotustra_ ok
22:36 ace4016 Hyratel, i love my cast iron cookware :D
22:36 robotustra_ I have to tell you sorry?
22:36 GuShH quit attacking everyone around you
22:37 GuShH I'd be surprised if your wife didn't leave you.
22:37 GuShH I feel sorry for her.
22:37 robotustra_ you are funny
22:38 robotustra_ too fragile
22:38 GuShH Chances are she already did and that's why you take it on everyone.
22:38 ace4016 Hyratel, i learned about the rust bluing technique recently though and it made me think about cast iron. i noticed with my cast iron, one of them wasn't seasoned properly and I had to use a brillo pad (metal sponge) on it, and it turned the surface the metallic grey/silver color. made me start thinking that they got the black color on cast iron by rust bluing them
22:38 Hyratel ace4016, yeah
22:39 Hyratel if you season without bluing it, you get this finish -
22:39 Hyratel https://dl.dropboxusercontent.com/u/33593534/images/cast%20iron/IMG_5947.JPG
22:39 Hyratel https://dl.dropboxusercontent.com/u/33593534/images/cast%20iron/IMG_6881.JPG
22:39 GuShH robotustra_: If I'm fragile you are a puddle of gello.
22:39 ace4016 interesting
22:39 Hyratel that's actually the gray/white of the metal showing through the amber of the varnish
22:40 robotustra_ ok, everything is clear with seasonong now
22:42 ace4016 makes me want to get a cast iron from antique shops or thrift stores and completely strip them down, rust them with peroxide, and turn the red oxide into black with distilled water (repeat a few times), then season it and see if it comes out looking new
22:43 ace4016 rust bluing i think is usually done with some harsh chemicals, but I think i'd want to do the peroxide method as this is intended to be food grade :P
22:44 robotustra_ I thought that we build robots here
22:45 Hyratel ace4016, fr stripping to bare metal, the safest method would be electrolysis
22:45 Hyratel which leaves no residues
22:46 ace4016 hrm
22:47 ace4016 robotustra_, and material science isn't applicable? :P
22:47 robotustra_ cast iron robots?
22:48 ace4016 some parts would probably do well being made in cast iron; and lets me honest...not everything in this channel is robotics :P
22:48 robotustra_ I build my robot from aluminium, polycarbonate, epoxy, etc
22:48 robotustra_ Why I'm not surprised
22:49 robotustra_ it was sarcasm
22:50 Hyratel ace4016, red rust will 'blue' in an anoxic environment
22:50 ace4016 do you limit yourself to those materials for any reason? or just whats on hand/what you know?
22:51 robotustra_ ace4016: are you to me?
22:51 Hyratel https://dl.dropboxusercontent.com/u/33593534/images/Robot/DSCN2011.JPG
22:51 Hyratel steel frame
22:51 Hyratel steel axles, steel rims
22:51 ace4016 Hyratel, i was wondering about that; all the processes i've seen turn the red rust into black and go on with life; never seen a red bluing
22:51 Hyratel well blue/black
22:51 ace4016 yea
22:51 Hyratel they're probably indistinguishable by eye under the varnish
22:51 ace4016 robotustra_, aye :P
22:52 robotustra_ I use these materials because the density of them is much smaller than for iron parts
22:52 robotustra_ and they are stong enough
22:53 robotustra_ I'll have irom bolts and shafts if needed
22:53 robotustra_ iron
22:53 ace4016 gotcha
22:53 ace4016 hrm...
22:54 robotustra_ but I don't see any reason to use iron as a frame for construction
22:54 ace4016 need to get to work on some things...
22:54 Hyratel steel > Iron for moving parts
22:54 Hyratel or anything that isn't a baseplate
22:54 robotustra_ I mean steel of cause
22:55 robotustra_ steel presents in my robot mainly as bolts and nuts
22:56 robotustra_ and wire ropes