GearHeads Corner
September 23, 2020, 02:06:14 PM *
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1  General Category / Gear Discussions / Re: Animate with a fixed gear on: July 25, 2020, 02:11:58 PM
I've made fasteners with my FDM printer and they come out ok but you have to sand and manipulat e post process to make them suitable.

You might want to check out rethreadi ng dies for cleaning up threads, I have a whole drawer full of them that I use regularly on old rusty farm (and other) equipment, they should work even better on plastic.  They're on my all time great tool list Smiley

Boltotic?  Nutz to you?  Please don't call it "Bolty McBolt Face".  Sign me up!  I could 3D print a 3/4 x 5 tpi part to fix my wife's art fair spinning wheel, kids jumped on it many years ago (the youngest just turned 30) and Nan found out the maker has passed away.  The wood thread guys seem to like 3/4 x 6 tpi so I can't just order a die to match.

Kirk
2  General Category / 3d Printers Discussion / Re: Bits from Bytes (BFB) 3D Printer firmware update on: May 02, 2020, 05:09:46 PM
What happens if you use Prusa Slicer to generate the gcode?  I found some comments saying it will take gcode from other slicers, which have changed a lot in the last 10 years.

I'd consider abandonin g the old controlle r if a different slicer doesn't work, might be more than bit rot.  RAMPS controlle rs are pretty cheap, but I'd consider going to an SKR E3 mini if you think it would fit.  Otherwise Ender 3 Pros are a couple hundred bucks and likely a much better printer, it's V2 is on preorder or something like that and the original will probably start dropping in price if it hasn't already.

Kirk
3  General Category / Laser Stories / Re: Retrofitting my Chinese laser on: April 26, 2020, 12:30:00 PM
In the early 80s I was a manager at a small company, and had an engineer named Scott that reported to me.  Scott would smile at the first Beam me up joke, then politely ask you to stop at the second.  He was an ex football player, nobody ever argued.

Old people are older than me.  I'm just a creakie retired young guy.

Kirk
4  General Category / Laser Stories / Re: Retrofitting my Chinese laser on: April 24, 2020, 09:37:39 AM
I watched the original star trek when it was new, although it was quite a few years until I saw it in color.  DS9 is a newcomer. ..

Kirk
5  General Category / Laser Stories / Re: Retrofitting my Chinese laser on: April 23, 2020, 08:46:54 AM
You're right, I was looking at the super gerbil.  C3D's really raised its prices, think my prototype board was around a hundred bucks.  The original controlle rs seem more designed to keep the other guys from copying them than to see what they could get out of the amazingly cheap (last time I looked, pre CV, they were $300US delivered) K40s.

If chamnit finds the time to make the official 32bit grbl releasabl e expect a wave of sub $40 32 bit boards like the E3 mini.  Seems like there's a use for all those smartphon es after all (besides increasin g EMS and hospital income when they walk around staring at them), made high power MCUs super cheap and less than the 328 based controlle rs.  Didn't seem that long ago when a AT90USB12 80 Printrboa rd was $140...

Kirk
6  General Category / Laser Stories / Re: My son bought me a much maligned K40 laser on: April 23, 2020, 08:37:32 AM
Plus it seems like acrylic cement comes in bottles designed to pour it on, rather than the tiny amount really needed.  Next time, with the next bottle since it all evaporate s about 5 minutes after you open it (plus it's been close to two years since we've been there), I'll dig out a hypodermi c syringe and needle from the box of left over farm vet stuff

Acrylic cement is pretty cool stuff, quickly dissolves acrylic to fuse it, and almost as quickly evaporate s, and if you're not messy makes a very clean joint

You can never have too many spare parts, just not enough space.  Helps if you're organized so it's not quicker to drive to town to find that part you know you have but that has been hidden away by the swamp rats

Kirk
7  General Category / Laser Stories / Re: My son bought me a much maligned K40 laser on: April 22, 2020, 12:34:15 PM
I did a pile of gearotic gears, including some eccentric fidget toys from scrap window plexiglas, with my K40.  Works quite well, although you have to be careful with acrylic cement when gluing the boxing around the gears.  Amazing how the plexi edges look polished.

How do you like that super gerbil?  Did you not like the mini gerbil, or does it do something you needed that the mini wouldn't?  I see that awesome dot tech has a direct link to the K40 forum's new location since G+ went poof, nice touch.

Kirk
8  General Category / Laser Stories / Re: Retrofitting my Chinese laser on: April 22, 2020, 12:26:02 PM
The mini gerbil board, alas, costs almost as much as the rest of the laser.  I imagine it has to do with small productio n volumes rather than profitter ing, but it's still spendy.

Since the original discussio n the M2nano's protocol has been reverse engineere d (not only do the chinese rampantly copy our stuff they also pirate each others, hence the stupid dongle dodad) and you can run the machine dongleles s with K40Whispe rer from scorchwor ks (it's free, although there are people selling it on eBay and elsewhere to those who are weak in the search-fu)

And I still haven't installed my controlle r board, but I'll blame a lot of that on not making it to the Mooselake Manor for over a year and half because of knee surgeries and a no-step MLM south in Florida.  Maybe some procrasti nation and ADD in there too.  Mrs Moose wants to stay here until the CV situation dies down so we're not leaving next week as planned

Kirk
9  General Category / 3d Printers Discussion / Re: Anyone have a recommendation for a good but low cost 3D printer? on: April 13, 2020, 01:58:45 PM
Ender 3 Pro, around $200.   There's a newer model for pre-order but it's more expensive, The Ender 3 V2.  quieter motor drivers (TMC2209 iirc), bigger display, included glass print bed with some fancy better-sticker coating, minor mechanica l changes (rarely used belt tension screw, manual filament advance knob (for those who's thumbs are too weak to hold the lever and push, added drawer, repositio ned power supply, etc).  Check that out and see what you think of it too.  It's not as good as a tricked out i3 MK3s with the MMU, but the Prusa isn't 5x as good for it's 5x price.  Plus when he gets to where he needs that he'll want more than one printer.

I have an E3P and am quite happy with it.  Needed something for the southern mooselake manor to keep the 3018 dinky router company during the avoiding snow shoveling season (and last summer while recoverin g from knee surgery in a no-stairs house).  Only mod was replacing it's stock plastic extruder with an aluminum dual gear model, and some stouter bed adjusting springs (no alien probing with this model, needs the occasiona l 15 second recheck).  Neither totally necessary, but only cost about 20 bucks.  Some day I'll probably drop an SKS E3 mini control board in it, 32 bit arm CPU and TMC drivers, but not in a rush.

Kirk
10  General Category / Third Party Software / Re: Looking for Software to Plan Project on: February 06, 2020, 10:11:48 PM
I don't know if it's any help, but I found and bookmarke d this free linkage design program some time ago

Kirk
11  General Category / Newest Rev Release / Re: New version on: February 02, 2020, 02:26:19 PM
Minor, in the about menu, the about box header, and the about box message Vexx is spelled vecs.  Also the copyright date is 2017

Kirk
12  General Category / Gear Discussions / Re: Can someone identify the gear cutter used here please on: January 27, 2020, 10:22:23 PM
Taps used to be a common way to DIY 3D printer filament "hobbed" gears.  These are used to push filament through the printers melting device, aka the hot end

Kirk
13  General Category / Suggestions for Future / Re: Cycloid Reducer. on: January 24, 2020, 10:14:42 AM
That's a pretty cool clock!

I've got a stack of russian birch and thin hardwoods (including some nice in the picture quarter saw white oak)  sitting in my Ocooch Hardwoods shopping cart.  Maybe it's time to click the buy button and quit screwing around with goopy plastic stuff.

Ocooch HW is just down the road (if you call 6 hours driving "just") from the Mooselake Manor, but quite a bit further to the snow free winter cottage.  They get good reviews but never bought from before.  Anybody dealt with them?  I have a few bucks left before the flat rate shipping jump, any suggestio ns on a nice clock/ticker hardwood before I pull the trigger?  Who knows, maybe I'll actually complete something this time

Kirk
14  General Category / Suggestions for Future / Re: Equation of Time on: January 23, 2020, 06:01:07 PM
EoT even has it's own website

Kirk
15  General Category / Suggestions for Future / Re: Cycloid Reducer. on: January 22, 2020, 08:50:55 AM
How did you make the back plate and eccentric inserts?

Kirk
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