Search found 226 matches

by Nigel K Tolley
Mon Dec 22, 2014 12:42 pm
Forum: Discussion
Topic: Melting Acrylic during engraving
Replies: 6
Views: 1528

Re: Melting Acrylic during engraving

The issue with exuded is it wants to cut properly at a different speed along the extrusion axis, than the other.

Whatever speed you pick won't work well to cut a circle!
by Nigel K Tolley
Sun Jul 27, 2014 9:21 am
Forum: GRBL
Topic: GRBL as cnc plasma?
Replies: 12
Views: 3191

Re: GRBL as cnc plasma?

But when I'm cutting free hand, none of this is an issue because the plasma torch auto adjusts the current. It has to, there's just no way a person could make a half decent cut otherwise. I figure that will make the system more effective than a 'dumb' CNC system will be. When hand cutting, you just ...
by Nigel K Tolley
Sun Jul 27, 2014 9:14 am
Forum: 3D Printing
Topic: RepStrapOko
Replies: 42
Views: 9081

Re: RepStrapOko

But a structural part that's out by .5mm due to the giant nozzle will need extra finishing, & you might as well have run it with a smaller nozzle and done something else for the extra hour.
by Nigel K Tolley
Sat Jul 26, 2014 1:02 pm
Forum: Tooling & Fixtures
Topic: Need advice on end mill
Replies: 9
Views: 1799

Re: Need advice on end mill

I'd recommend just buying a set of dedicated drillbits for wood. However you could use a very short centering drill bit. Have the mill do a little dot in the right place, then use a drillbit to go through. If you want minimum deflection use a stubby drill bit first then a longer one. I'm not sure if...
by Nigel K Tolley
Fri Jul 04, 2014 11:39 pm
Forum: GRBL
Topic: GRBL as cnc plasma?
Replies: 12
Views: 3191

Re: GRBL as cnc plasma?

The major steps seem to be: get the torch to touch off, move afraction away, fire it up, then move it away a few mm. Then start cutting your part. All modern plasma systems use feedback to control the current so that the distance isn't that critical once the arc has struck. I'm planning to do a CNC ...
by Nigel K Tolley
Sun Jun 29, 2014 12:35 pm
Forum: Member Projects
Topic: Cut the TOOL wrench out of aluminum.
Replies: 5
Views: 2093

Re: Cut the TOOL wrench out of aluminum.

Very amusing. And nicely made.
by Nigel K Tolley
Sun Jun 29, 2014 12:33 pm
Forum: Lounge
Topic: Plans for a deadblow hammer/mallet
Replies: 1
Views: 519

Re: Plans for a deadblow hammer/mallet

That is really nice.
by Nigel K Tolley
Sat Jun 28, 2014 4:10 pm
Forum: Assembly
Topic: Stepper motors vibrating
Replies: 13
Views: 3353

Re: Stepper motors vibrating

That might be a great idea for the hackspace to save some money on the homebrew machines members make. I even donated one of those switch boxes a while back.
by Nigel K Tolley
Sat Jun 28, 2014 4:05 pm
Forum: Discussion
Topic: Dewalt Dw660 Brushes Worn?
Replies: 10
Views: 1363

Re: Dewalt Dw660 Brushes Worn?

Yes, soldering a heat triggered one-shot fuse isn't going to work out well. They are nearly always held by a steel crimped cup or ferule.