#linuxcnc Logs
Jun 19 2023
#linuxcnc Calendar
02:26 AM travis_farmer[m4: Morning ☕️
04:30 AM Atomykatt[m] is now known as atomykatt0[m]
04:40 AM Tom_L: morning
05:04 AM JT-Cave: morning
05:38 AM JT-Cave: rooster just crowed
05:59 AM djsftree[m] is now known as djsftree0[m]
06:47 AM * travis_farmer[m4 enjoys a blueberry muffin for breakfast
07:12 AM JT-Cave: hmm it is time to break fast
08:02 AM * travis_farmer[m4 heads out to shop...
09:40 AM * travis_farmer[m4 uploaded an image: (5341KiB) < https://libera.ems.host/_matrix/media/v3/download/matrix.org/QTPnfiRMBhjvgEvlZcGaalgi/20230619_101807.jpg >
09:40 AM travis_farmer[m4: first laser burn
09:41 AM travis_farmer[m4: out of focus, and needs a little slower feed rate...
09:42 AM travis_farmer[m4: took a little over an hour to burn
09:42 AM roguish[m]: travis_farmer: practice, practice, practice....
09:43 AM travis_farmer[m4: yup, i know. that was my very first attempt, so not bad really ;-)
09:44 AM unterhausen[m] is now known as unterhausen0[m]
09:44 AM Unterhaus_: why does my discord name have a zero after it?
09:45 AM roguish[m]: very nice for a first....
09:45 AM * travis_farmer[m4 uploaded an image: (115KiB) < https://libera.ems.host/_matrix/media/v3/download/matrix.org/xSUcSCGOXXIbkNUjhDJHABjs/89851797-mountain-landscape-camping-icon-.jpg >
09:45 AM travis_farmer[m4: that's what it should look like
09:45 AM Unterhaus_ is now known as Unterhausen
09:49 AM unterhausen0[m]: that took an hour?
09:49 AM travis_farmer[m4: over an hour
09:50 AM Unterhausen: maybe the focus was the big problem?
09:51 AM travis_farmer[m4: yeah, i don't have my safety glasses yet, so i just set to a non-specific height, and ran it
09:52 AM Unterhausen: yeah, if you use a laser without safety glasses, focus is going to be worse. Might not be the least of your vision problems either
09:53 AM travis_farmer[m4: i never looked at the beam, so only way i knew it worked was when it finished
09:53 AM roguish[m]: travis_farmer: just wait for your laser glasses.... even a reflection can damage the eyes.....
09:53 AM ZincBoy[CAON][m]: I hope you were not in the same room. Even reflected light from a laser like that is hazardous.
09:53 AM ZincBoy[CAON][m]: I.e. go blind hazardous.
09:53 AM travis_farmer[m4: i was out working on my camper renovation while i waited
09:54 AM roguish[m]: I had a laser safety class thing at Lawrence Livermore National Lab. Lot of lasers there. think NIF.
09:55 AM travis_farmer[m4: glasses are already on order. should be here, possible, by wednesday, so i can set focus then and try again
09:56 AM roguish[m]: be sure the glasses are correct for the particular laser wavelength
09:57 AM travis_farmer[m4: laser is 445nm https://www.ebay.com/itm/325316587885
09:59 AM unterhausen0[m]: I hate being in the same room as a lasser
09:59 AM unterhausen0[m]: also a laser
10:00 AM Unterhausen: it's nice being the zeroth unterhausen, but too bad it shows up here
10:08 AM Scopeuk: with nif isn't laser safety a little mute. the nif is kind of entire body evaporated level of power
10:09 AM ZincBoy[CAON][m]: The unshielded laser engravers/cutters are hilariously unsafe. They really should not be sold. They are your eyes travis_farmer, but I only use certified laser goggles with my laser. I wouldn't trust random ebay googles to protect me. (insert radioactive man googles meme here 🙂
10:10 AM Scopeuk: lasers are not to be messed with, the everything is good to life long debilitating injury time is fractions of a second
10:10 AM Scopeuk: once little scuff creates a nice polished edge on your supporting grid and you just pointing a high power laser beam at a mirror
10:10 AM travis_farmer[m4: Hmm, figures. just bought 4 of them the other day... $100 worth of crap?
10:11 AM Norsktroll[m] is now known as norsktroll0[m]
10:13 AM roguish[m]: travis_farmer: hope not....
10:16 AM * Tom_L smiles at JT-Cave
10:16 AM Tom_L: i see your notes on keeping track of the joints
10:30 AM roycroft: a proper pair of laser glasses will have the wavelength range and optical density stamped/etched into a corner of the lenses
10:32 AM travis_farmer[m4: the ones i bought have that in the ad, but not sure if it is on the glasses or not, until i get them.
10:32 AM Tom_L: what organization or standard of approval do they fall under?
10:33 AM Tom_L: CE Certification
10:33 AM Tom_L: along with the Optical Density
10:33 AM ZincBoy[CAON][m]: Personally, I buy my laser googles from ThorLabs. https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=762#9901 I haven't found any suppliers I would trust that have substantially lower prices.
10:35 AM Tom_L: what sort of OD? i know you can get welding glass in different densities
10:35 AM roycroft: you probably want at least od +6 for a smallish diode laser
10:35 AM Tom_L: typically a torch was around a 9 or so and welding a bit higher 10-12
10:36 AM Tom_L: i double them up during an eclipse :)
10:36 AM ZincBoy[CAON][m]: The ebay ones linked do not appear to be certified in any way. And yes I would agree that 6+ would be what I would want.
10:36 AM travis_farmer[m4: so i spent $100 on trash? figures
10:36 AM perry_j1987: mmm rhubarb cookies
10:36 AM roycroft: if you spent much less than $200 for a pair i would be suspect
10:37 AM Tom_L: you can wear them to look cool
10:37 AM roycroft: hopefully they are a wrap-around style
10:37 AM * travis_farmer[m4 is very VERY pissed at himself right now...
10:38 AM Tom_L: research
10:39 AM * roycroft wonders if the folks at shaper tools are working today
10:40 AM Tom_L: doubtful
10:40 AM roycroft: i can't do anything with my origin soon anyway, until i finish with the slabs i'm working on, but if they're going to ship me a new one it would be nice to get that going
10:41 AM roycroft: yeah, i expect it's a holiday for them
10:41 AM Deejay: hi
10:41 AM Tom_L: roycroft, solved my txting issue
10:42 AM Tom_L: you'd checked on that for me iirc
10:49 AM roycroft: yes, and now that i think about it, i never got the answers i needed
10:49 AM roycroft: i'm glad you solved it
11:02 AM roycroft: we're having a sunny break at the moment, but thunderstorms are back in the forecast for today
11:07 AM roycroft: xkcd is in color today, which is a rare event, but kind of necessary for this one
11:36 AM W1N9Zr0[m] is now known as w1n9zr00[m]
12:21 PM JT-Shop: yippee just got my refund from Discount Tires Direct for the tires I returned
12:22 PM JT-Shop: it only cost me $56 to send the 4 huge tires back...
12:23 PM Unterhausen: I got excited for a moment because they recalled my subpanel
12:23 PM Unterhausen: but it turns out it was for a specified date range, and mine is older
01:27 PM travis_farmer[m4: still pissed at myself... in all the research i did, nobody ever mentioned that the safety glasses needed to be certified, and likely over $200! so i checked safety glasses for the 445nm rating, found some i could afford (with credit, not cash), and bought 4 of them, in case somebody stopped in while the laser was running. so i did do research, and yet still bought what is apparently trash.
01:28 PM roycroft: can you return them?
01:29 PM travis_farmer[m4: yes, but it is the principle, as i still can't afford the correct ones
01:29 PM roycroft: if the vendor does not accept returns, but advertises them as certified, you may be able to prevail when opening a case with ebay claiming they are not what was represented
01:39 PM * travis_farmer[m4 uploaded an image: (17KiB) < https://libera.ems.host/_matrix/media/v3/download/matrix.org/ASanlTfJyWggPmppZDwfDBcG/Screenshot%202023-06-19%20at%2014-37-51%20Laser%20Safety%20Goggles%20~%20190nm-540nm%20~%20Fits%20Over%20Glasses%20-%20Protect%20Your%20Eyes!%20EP-O%20eBay.png >
01:39 PM travis_farmer[m4: that is what "certification" they have listed
01:44 PM jpa-: i wouldn't rely on just glasses anyway, certified or not - laser without enclosure and interlocks is just waiting for a mistake
01:45 PM travis_farmer[m4: no way to cost effectively enclose the machine
01:46 PM jpa-: yep, i wouldn't put a laser on it then
01:46 PM jpa-: or close whole room and use webcam
01:47 PM travis_farmer[m4: well hell, why don't i just sledge-hammer the whole damn machine and then myself as well...
01:48 PM jpa-: it's your choice of course, but that's my personal risk analysis
01:55 PM roycroft: when using the laser you could rig up something to mitigate any unwanted deflection issues
01:56 PM roycroft: iirc this is a pretty low-power laser
01:56 PM roycroft: hanging a sheet of thick canvas in front of the machine would block a stray beam
01:56 PM roycroft: what is important is that you are aware of what can happen and what the consequences would be
02:06 PM Mike72[m] is now known as mike_720[m]
02:19 PM * roycroft is not recommending hanging a sheet of canvas in front of the machine, and will not responsible for anyone's eyes
02:51 PM * JT-Shop forgot why he came in here...
02:51 PM roycroft: to tell the truth?
02:52 PM JT-Shop: what a pia google keeps blocking my searches on this pc
03:00 PM * JT-Shop makes a small adjustment to the honeycomb locators for the D1
03:56 PM * travis_farmer[m4 is back, with a slightly cooler head...
04:15 PM travis_farmer[m4: i don't know what is considered low or high power laser, but this is just a 10W diode laser, 445nm. where the machine is now, i am unsure how to mitigate stray beams as there are windows i can't get to due to the machine being in the way. perhaps i can block them off from outside. i can't imagine beam deflection, as i am only engraving wood, not cutting through it. but just the same, i have a 3/4" plywood under it to step it up high
04:15 PM travis_farmer[m4: focus. the laser module does have a 3-sided shield on it, but not for the back side.
04:17 PM roguish[m]: travis_farmer: research it a bit. ya got time... ya may find something pretty simple and cheap to shield it....
04:17 PM roguish[m]: you do have some valid points there
04:20 PM travis_farmer[m4: wondering if a welding curtain may help for the time being... with the safety glasses
04:20 PM ZincBoy[CAON][m]: Look at: https://www.lasersafetyfacts.com/laserclasses.html
04:21 PM TurBoss: mine is 5W laser and i accentally look at it bu no issues .... yet
04:22 PM ZincBoy[CAON][m]: Note that anything over 500mW is a class 4 laser. For a 10W visible laser, you are looking at a 710m or 2320ft minimum distance to be considered hazard free.
04:23 PM travis_farmer[m4: Hmmm....
04:24 PM ZincBoy[CAON][m]: "just" a 10W laser is still really, really dangerous. A laser pointer that is considered eye safe is 1mW. 10000X less power.
04:25 PM ZincBoy[CAON][m]: A welding curtain would help if it is opaque. One of the semi transparent ones may or may not block the beam.
04:25 PM travis_farmer[m4: so yeah, block off the windows, and something between me and the machine...
04:26 PM travis_farmer[m4: that will be easier in the new shop, but not much room in the current shop
04:27 PM travis_farmer[m4: on the new shop, i plan on a Laser warning sign on the entry door when it is in use
04:28 PM * JT-Shop goes to make some chicken crack
04:29 PM ZincBoy[CAON][m]: Door should interlock with the laser in a safe setup. Door open = no laser. This is what we have at work for the room where we use open lasers. Plus restricted access so no untrained people wandering in.
04:29 PM roguish[m]: travis_farmer: welding screens or curtains
04:30 PM travis_farmer[m4: the interlock sounds reasonable
04:30 PM ZincBoy[CAON][m]: I am pretty sure there is going to be an uptick in ocular injury due to these cutters being sold without any safety. If there hasn't been already.
04:31 PM travis_farmer[m4: i mentioned welding curtain already... oh, for the current shop? yeah, that may help greatly
04:33 PM roguish[m]: travis_farmer: you can get a pretty cheap stack light, on when in use.. https://www.amazon.com/LUBAN-Industrial-Rotatable-Flashing-Switchable/dp/B086ZJ86KY/ref=sr_1_14?crid=978K9RDT5B7U&keywords=stack+light&qid=1687210354&sprefix=stack+light%2Caps%2C161&sr=8-14
04:33 PM roguish[m]: flashing maybe even
04:34 PM travis_farmer[m4: yeah, i have been looking into a stack light. for various reasons...
04:35 PM XXCoder: travis_farmer[m4: other way would to have sheild on seperate z from spindle (seperately adjustable) so it can be manually set so edges is just above part, and does not move up and down with spidle z movemenets
04:36 PM travis_farmer[m4: possible... making mental note...
04:37 PM XXCoder: it wont be as good as full enclosure
04:37 PM XXCoder: keep that in mind
04:41 PM travis_farmer[m4: now i just need some sponsors to help pay for all this... ;-)
04:41 PM JT-Shop: XXCoder, lasers usually don't have a z axis
04:41 PM XXCoder: his router hes attaching laser to does
04:42 PM JT-Shop: oh right
04:42 PM XXCoder: but yeah for laser machine without it, it would be added manual z axis for sheild
04:42 PM travis_farmer[m4: when i run it as a laser, i set the ride height, and then it stays there
04:43 PM XXCoder: better lower range ones, you can also move laser up and down manually. like what roy has
04:43 PM JT-Shop: right but the laser is the same distance from the work piece all the time
04:43 PM travis_farmer[m4: in future, i will probe the work, and it will move to ride height
04:43 PM travis_farmer[m4: right
04:44 PM XXCoder: jt yeah.
04:51 PM travis_farmer[m4: supper is ready, signing off. much to think about :-)
04:52 PM roycroft: my concern when installing a laser on a milling machine next to or in lieu of the spindle is reflections off the machine bed
04:53 PM XXCoder: yeah. id lay part on wood or something
04:56 PM roguish[m]: many years ago, some friends worked for a company that made fabric cutting cnc machines for yacht sails. they used to joke about 'align laser with remaining eye.....'
04:59 PM roguish[m]: it is definitely , generally, the reflections that'll get ya. not too many people are stupid enough to look directly at a laser beam, certainly not Travis....
05:01 PM XXCoder: yeah. when I ran low powered laser, I wore goggles constantly when it was powered on (as machine is on not just when laser is on)
05:02 PM XXCoder: i dont need to lose any senses, I have few enough as it is.
05:05 PM roycroft: specifically, t-slots in milling tables often have 45 degree chamfers along the edges
05:05 PM roycroft: that is a perfect opportunity for a reflection that could be at eye-height
05:06 PM * roycroft ponders whether to go out and do some slab flattening now that work is over
05:06 PM roycroft: i kind of want to get the router sled part done asap so i can clean up the shop and not have to wade through chips to walk out there
05:07 PM roycroft: i've been locating the pump for my fresh air respirator outside in the side yard, next to the shop, and since it's not raining at the moment that would work out ok
05:08 PM roycroft: that device is perhaps the best shop adddition i've made in years
05:08 PM XXCoder: honestly with router with adjustable height I'd design a laser trap box so can have say 1 cm height ribs for better air assistance
05:14 PM JT-Shop: I think I finally got the dimensions correct for the honeycomb locators
05:20 PM JT-Shop: https://youtu.be/C5HKiKcoONc?t=237
05:20 PM JT-Shop: pretty cool mandrel
05:22 PM XXCoder: hmm I see brass moving forward as its being cut
05:22 PM XXCoder: still clean cut though
05:24 PM XXCoder: ah guy fixes it and does cut again. nice
05:24 PM XXCoder: I hate channels that hide errors
05:24 PM JT-Shop: I missed that
05:25 PM XXCoder: i remember that channel where guy made a pretty bad error. it wasnt too olvious but I could see it. on next shot guys holding entirely different part
05:25 PM XXCoder: so I dropped channel
05:25 PM XXCoder: (it wasnt first time)
05:26 PM roycroft: keith rucker would not ever hide errors
05:26 PM roycroft: his channel is more for instruction/education than making money
05:27 PM XXCoder: nice.
05:29 PM roycroft: yeah, i saw the bushing scoot up towards the chuck
05:30 PM roycroft: fortunately that did not ruin the part
05:30 PM XXCoder: yeah guy still had some room left
05:31 PM XXCoder: finish was bit weird but not too bad and it was cut off after
05:41 PM roycroft: it's the outside of a bushing - it doesn't need to be shiny
05:41 PM roycroft: just the correct size
05:41 PM XXCoder: yeah
05:42 PM roycroft: ok, i need to decide what to make for dinner so i can go to market before i cover my entire body in wood chips
05:43 PM roycroft: i think i'll decide when i get there
05:43 PM XXCoder: do the wood thing first. it'll be great seasoning for food ;)
05:44 PM roycroft: i'll be preparing the meal after the slab flattening
05:44 PM roycroft: i have to take 1/2" off one of the slabs
05:44 PM roycroft: i might not get that done today - i'm taking passes of about 1/32" or less
05:45 PM JT-Shop: roycroft, do you want the honeycomb locator files?
05:45 PM roycroft: so 16-20 passes, at about 10 minutes per pass
05:45 PM roycroft: sure, jt-shop
05:45 PM roycroft: wait
05:45 PM roycroft: are they the locators that go under the feet?
05:46 PM XXCoder: that reminds me. I really need to get the test model printed
05:46 PM XXCoder: its just attachment for 2020 beam
05:46 PM XXCoder: if it works ill print parts for filter fan
05:46 PM * JT[m] uploaded an image: (186KiB) < https://libera.ems.host/_matrix/media/v3/download/matrix.org/mhFBbrxEDDHClANGrJfGjMhi/20230619_174556_1260338638781553413.jpg >
05:46 PM roycroft: if so, they won't work for me
05:46 PM XXCoder: my filters arrived today. sucks that online I can buy 4 filters for less than 2 of cheaper filters here
05:47 PM * JT[m] uploaded an image: (184KiB) < https://libera.ems.host/_matrix/media/v3/download/matrix.org/eRcCXaITtSFwXTVCSPVIdtLr/20230619_174619_6225508507186320666.jpg >
05:47 PM roycroft: yeah, those won't work for me, but thanks anyway
05:48 PM * JT[m] uploaded an image: (292KiB) < https://libera.ems.host/_matrix/media/v3/download/matrix.org/DOEzSpFhBecKCQSKqZzGYTzh/20230619_174725_8625528567441137280.jpg >
05:48 PM roycroft: my laser sits on some spacer blocks that are permanently attached to the enclosure
05:48 PM JT-Shop: may or may not work for you then
05:49 PM roycroft: i should clarify
05:49 PM roycroft: my laser will sit on some spacer blocks that are permanently attached to the enclosure
05:49 PM roycroft: since the enclosure is still in the fabrication shop waiting for the paint to cure
05:50 PM * JT-Shop calls it a day
05:51 PM XXCoder: https://imgur.com/DSTjHXB.png
05:51 PM XXCoder: test object
06:17 PM roycroft: time to make wood chips
06:25 PM JT-Shop: you going to machine that?
06:25 PM XXCoder: nah 3d print
06:25 PM XXCoder: that thing is to ensure that i designed it correctly before printing larger part
06:26 PM XXCoder: less plastic wasted if error
06:26 PM JT-Shop: that makes sense
06:26 PM XXCoder: its for fan attachment part
06:27 PM XXCoder: have yet to design bottom "legs" part of it, and tabs to hold filter
06:28 PM XXCoder: external will use tape to seal seams. inside tabs since air pressure will be negative
06:38 PM Tom_L: freecad?
06:39 PM Tom_L: that would be next to impossible to machine
06:39 PM XXCoder: yeah freecad, and yep
06:39 PM XXCoder: would need edm
06:39 PM Tom_L: you could drill the corner and broach it if you absolutely had to
06:39 PM Tom_L: impractical
06:50 PM XXCoder: fun heh
06:50 PM XXCoder: well its printing now
06:50 PM XXCoder: love prusa printer. havent printed for a year and prints perfectly
06:51 PM XXCoder: had to add dust filter though since I havent removed filanment roll and its dusty
07:15 PM XXCoder: yep glad I checked. the holders is slightly too long
07:15 PM XXCoder: so "noses" hits inside so it cant slide down
07:38 PM roycroft: well i got the thick slab flattened
07:38 PM roycroft: the one that was 1/2" too thick (at the end)
07:39 PM roycroft: i was taking 0.5mm passes, and by the time i got down to where i was taking a full cut all the way across the board, it only needed one more pass to get to thickness
07:39 PM XXCoder: nice
07:39 PM roycroft: yeah
07:39 PM roycroft: the other slab is still somewhat uneven
07:39 PM XXCoder: im working on fan attachment part
07:39 PM XXCoder: initial test failed lol
07:39 PM roycroft: next i need to join them together, then i can do the final thicknessing
07:40 PM roycroft: now that i have my feeds and speeds dialed in i'm going about 5x as fast as i was yesterday, and generating zero smoke
07:40 PM roycroft: i guess slabbing takes a bit of practice and skill
07:44 PM XXCoder: awesome. second attempt worked
07:46 PM roycroft: https://roycroft.us/Slabbing/Slabbing1.jpeg
07:47 PM roycroft: https://roycroft.us/Slabbing/Slabbing2.jpeg
07:47 PM roycroft: https://roycroft.us/Slabbing/Slabbing3.jpeg
07:47 PM XXCoder: thats cool
07:48 PM roycroft: it's not a big slab, but it was the perfect size for me to figure out how to flatten slabs
07:48 PM roycroft: i've never done that before
07:48 PM XXCoder: well it does look nicely flat
07:48 PM roycroft: the wood is from a birch tree that was in front of my ex-gf's house
07:48 PM roycroft: she had to remove the tree, and salvaged the wod
07:48 PM roycroft: wood
07:49 PM roycroft: i'm going to make a counter top for her to use at the country fair
07:49 PM roycroft: it's flat enough
07:49 PM roycroft: after i join the two pieces and flatten them a bit more i'll use a sander to get it nice and flat and smooth
07:50 PM roycroft: when i started it was warped about 1/2"
07:50 PM XXCoder: I guess its been sliced and dried a while ago
07:50 PM roycroft: and that's after i've hand planed it several times over the past three years
07:50 PM roycroft: for some reason those slabs kept moving
07:51 PM roycroft: the ends were not painted when they were milled, and that had a lot to do with it
07:51 PM roycroft: i'm letting the dust settle for a bit, and then i'll go suck up today's chips
07:52 PM roycroft: the next step is squaring the middle ends and joining the slabs
07:52 PM roycroft: and i'll be using epoxy as the adhesive to join the two slabs together, but there will be NO "river", and NO visible epoxy
07:52 PM XXCoder: oh paints at ends help it stay mostly stable when drying?
07:52 PM roycroft: yes
07:52 PM roycroft: it seals the ends so they don't dry faster than the middle
07:53 PM roycroft: these slabs were milled 1-3/4" thick
07:53 PM XXCoder: thats good to know if I start buying basically firewood and slice em and dry
07:53 PM roycroft: if i'm lucky the final product will be 1-1/4" thick
07:53 PM XXCoder: dunno if I will ever do it
07:53 PM roycroft: well you want to do two things if you do that
07:54 PM roycroft: 1. cut the ends with a good saw (not a chainsaw), so they are fairly smooth
07:54 PM roycroft: and 2. coat the ends with latex paint
07:54 PM roycroft: enough that it doesn't all soak in
07:54 PM roycroft: if you want you can use some wood glue such as titebond and mix that with the paint
07:55 PM Tom_L: what held the levels in place?
07:55 PM roycroft: they are clamped down to the workbench
07:56 PM roycroft: and i got very lucky
07:56 PM roycroft: my workbench happens to be 78" long
07:56 PM Tom_L: how did you shim for the thickness you wanted?
07:56 PM roycroft: and i found 78" levels at lowe's
07:56 PM roycroft: i use baltic birch plywood underneath the slabs - i have 19mm, 12mm, 6mm, and 3mm
07:56 PM roycroft: that's for thin stuff
07:57 PM roycroft: if the slabs are really thick i have some 3/4" x 1-1/2" mdf strips that i can use underneath the levels to bring the router sled up
07:57 PM Tom_L: if need be you can come get some box extrusion: http://tom-itx.no-ip.biz:81/~webpage/cnc/local_stock/3.jpg
07:57 PM roycroft: those levels cost me some money, but i wanted something that would not warp, and they seemed to be the cheapest thing that would do the job
07:58 PM roycroft: they were about $65 each
07:58 PM roycroft: i might have been able to get some rectangular tubing for a little less
07:59 PM roycroft: but the levels are painted, and straight and flat enough, easy to hang up on a wall
07:59 PM roycroft: so they checked a lot of boxes, and weren't outrageous in price
08:00 PM roycroft: what i did not want to do was try to make rails out of mdf or 2x4s, as many do
08:00 PM roycroft: that's just a disaster begging to happen
08:00 PM roycroft: my workbench is dead flat
08:00 PM roycroft: and that was the key to making it all work
08:01 PM roycroft: but it's also a pain in the butt, because it would be a lot of work to move my workbench outside, where i would prefer to be when making that much chips
08:02 PM roycroft: anyway, i made good progress, and i think daphne will be happy with the shelf when it's done
08:03 PM XXCoder: nice
08:03 PM roycroft: when i join the two birch slabs together i'll use dominos, but i'd like to strengthen the joint a bit beyond that, and i'm thinking of inlaying some bow ties at the joint, using a nice contrasting wood like walnut or jatoba
08:03 PM roycroft: the shaper origin should make that trivial to do
08:03 PM roycroft: and bow ties definitely impress the ladies :)
08:04 PM Tom_L: you don't put biscuts in the middle?
08:04 PM roycroft: no, dominos
08:04 PM roycroft: and these slabs are big enough that i should probably use 10mm dominos, which i don't think i have
08:04 PM roycroft: i am pretty sure i have a 10mm domino cutter
08:05 PM roycroft: but i've not needed dominos that big for anything since i got the machine
08:05 PM roycroft: i have some 8mm, but i really should use 10mm for this
08:05 PM roycroft: and i wonder why my money goes away so fast all the time
08:06 PM roycroft: some day i'll have all the tools that i need, and all the supplies that i need, and i'll never need to spend money on things for my shop again
08:06 PM roycroft: that day will come when those monkeys fly out of my butt
08:06 PM XXCoder: as well as dream of being billionaires
08:07 PM roycroft: i don't dream of being a billionaire
08:07 PM roycroft: in fact, i'd really rather not be one
08:07 PM Tom_L: you will always need one more tool
08:07 PM roycroft: it's way too much responsibility
08:08 PM XXCoder: ideal number of tools is N+1
08:10 PM roycroft: it's only $31 for 100 10x50 dominos
08:11 PM roycroft: and i'll only use about 10 of them on this project
08:11 PM roycroft: but $31 here, $22 there adds up to a lot of money every month
08:13 PM XXCoder: yep
08:38 PM roycroft: tom_l: if you look at my router (https://roycroft.us/Slabbing/Slabbing2.jpeg), the green dial at the top of the cylinder on the left side is the depth micro-adjust
08:38 PM roycroft: it adjusts in 0.1mm increments
08:39 PM roycroft: i set the cutter to the high spot on the slab, then i can go down in precise increments using that dial
08:39 PM roycroft: i found 0.5mm to be the ideal pass depth for this wood
08:40 PM roycroft: the cutter is 50mm in diameter, and i'm running at about 14,000 rpm
08:44 PM Tom_L: nice
09:25 PM Tom_L: https://www.cbsnews.com/news/titanic-submarine-missing-rescue-mission-underway-newfoundland-canada/
09:36 PM roycroft: yeah, i read about that
09:36 PM roycroft: and the titanic sunk way fare away from the bermuda triangle
09:37 PM roycroft: so weird
09:48 PM XXCoder: hope they get people back
09:58 PM roycroft: yes, me too
09:58 PM roycroft: but when a small submarine goes missing there's not a lot of time for a rescue
09:58 PM roycroft: 96 hours, i just read
10:01 PM XXCoder: ouch yeah
10:27 PM firephoto__ is now known as firephoto_