Search found 101 matches

by sgth0mas
Sat Mar 05, 2016 5:09 pm
Forum: Member Projects
Topic: Making molds for liquid silicone rubber
Replies: 19
Views: 2794

Re: Making molds for liquid silicone rubber

these are awesome. i made some urethane molds also. i found getting it to flow into them with out a vacuum pulling it in i couldn't evacuate all the air. so i made a spill area around the side of the mold shape and i could over fill it a little and when i pressed the top of the mold down it would j...
by sgth0mas
Sat Mar 05, 2016 2:17 am
Forum: Design Ideas
Topic: Upgrading Z axis belt neoprene (fiberglass vs kevlar)
Replies: 4
Views: 2192

Re: Upgrading Z axis belt neoprene (fiberglass vs kevlar)

Hey everyone I want to see whats everyone's thought on it. The current z axis belt on the shapeoko 3 is made out of Neoprene Rubber with Fiberglass Reinforced http://www.robotdigg.com/product/501/520-2gt-6+endless+belt From my understand SDP/SI make Neoprene belt with kevlar reinforced. From my und...
by sgth0mas
Wed Mar 02, 2016 9:42 pm
Forum: Design Ideas
Topic: HDPE suitable for use as wasteboard?
Replies: 6
Views: 3024

Re: HDPE suitable for use as wasteboard?

Came across this searching on Lowes: http://www.lowes.com/pd_29856-73428-73004428___?productId=3542084 Barrette 8-ft x 8-ft HDPE Storage Shed Floor Kit Comes in 2' x 2' panels, and is $128 --- just $8 each for the 16 panels. Not in stock at my local store, and wondering how solid / thick it is, but...
by sgth0mas
Wed Mar 02, 2016 1:53 pm
Forum: Member Projects
Topic: 1/4" Threaded Insert Countersink Holes
Replies: 10
Views: 2326

Re: 1/4" Threaded Insert Countersink Holes

That's technically a counterbore. And i use my machine to counterbore many of the parts i make with no concern.

Countersinks are conical, counterbores are cylindrical, counter drills are both.
by sgth0mas
Wed Mar 02, 2016 2:09 am
Forum: Member Projects
Topic: Jewelry Box For My Daughter's 9th Bday
Replies: 16
Views: 4206

Re: Jewelry Box For My Daughter's 9th Bday

Excellent work!

And thank you for the tips. Especially regarding the inlay orientation during cutting. Im sure just about all desktop machines will benefit from that advice.
by sgth0mas
Sat Feb 27, 2016 3:56 pm
Forum: Discussion
Topic: Expansion packs announced
Replies: 71
Views: 6802

Re: Expansion packs announced

JBweld sucks on aluminum. if the aluminum is subjected to heating and cooling cycles (like out doors) it expands and contracts more than the Jb weld and pops off. When it popped of the aluminum so easily I never tried it on steel so not sure how well it works.... CBB You should tell that to Porsche...
by sgth0mas
Sat Feb 27, 2016 2:50 am
Forum: Discussion
Topic: SO3 hole tolerances?
Replies: 36
Views: 2327

Re: SO3 hole tolerances?

The problem is, difficulty is perceptual and contextual, based on one’s experience and frame of reference. That said, the machine is designed for (ease of) assembly. I still haven’t reviewed the instructions as closely as I’ve meant to though (when I assembled my machine all that was available were...
by sgth0mas
Fri Feb 26, 2016 11:21 pm
Forum: Discussion
Topic: Expansion packs announced
Replies: 71
Views: 6802

Re: Expansion packs announced

JBweld sucks on aluminum. if the aluminum is subjected to heating and cooling cycles (like out doors) it expands and contracts more than the Jb weld and pops off. When it popped of the aluminum so easily I never tried it on steel so not sure how well it works.... CBB I would expect the epoxy to exp...
by sgth0mas
Fri Feb 26, 2016 11:14 pm
Forum: Discussion
Topic: SO3 hole tolerances?
Replies: 36
Views: 2327

Re: SO3 hole tolerances?

I'm sorry you are so frustrated. Really, I am. But you need to understand that you bought a machine that costs 1/3 of what the next level up is (Rockler CNC Router for example) and no matter what anyone tells you, this is really a hobbyists machine. Yes, people make things to sell with it (I do, an...
by sgth0mas
Fri Feb 26, 2016 5:46 pm
Forum: Discussion
Topic: Expansion packs announced
Replies: 71
Views: 6802

Re: Expansion packs announced

Yeah, it seems a shame to risk ruining the rail ... The two plate approach probably wouldn't, as it uses the existing bolt holes. The JB weld or whatever for smoothing the discontinuity might muck it up though. Unless there's some kind of filler that could be removed afterwards, if/when the pieces ...