Search found 255 matches

by DanMc
Tue Dec 12, 2017 6:55 am
Forum: Electronics
Topic: 48v to 24v step down converter
Replies: 1
Views: 288

Re: 48v to 24v step down converter

I don't see why it wouldn't work. Just make sure to increase the wattage of the 48v power supply accordingly.
by DanMc
Fri Nov 17, 2017 2:05 am
Forum: Discussion
Topic: Bleaching wood, removing tannin?
Replies: 5
Views: 517

Re: Bleaching wood, removing tannin?

I've used oxalic acid to bleach wood, in my case the effect was mild and I'm not sure if it actually reduced tannins. There are 2 part bleaches which are supposed to be stronger but I have no personal experience. Google wood bleach. This stuff is all water based, mixing chemicals with water so I'm n...
by DanMc
Sun Nov 05, 2017 9:27 pm
Forum: Discussion
Topic: What is causing these weird lines in facing operation?
Replies: 7
Views: 519

Re: What is causing these weird lines in facing operation?

Unless I'm trying to hog out material really fast and I'm not worried about appearance I usually use .4 as the stepover ratio.
by DanMc
Sun Nov 05, 2017 9:25 pm
Forum: Software - CAD, CAM, Workflow Help
Topic: Recommendation for 5 axis CAD/CAM milling using NUM controll
Replies: 1
Views: 295

Re: Recommendation for 5 axis CAD/CAM milling using NUM cont

You might have a look at DeskProto, they have a hobbyist license which is reasonable. Apart from that everything I've seen is in the thousands for 5 axis and I have zero experience in that area. DeskProto is limited in how the 4th and 5th axis work so make sure it's compatible with your machine.
by DanMc
Tue Oct 24, 2017 2:25 am
Forum: Software - CAD, CAM, Workflow Help
Topic: what am I doing wrong
Replies: 3
Views: 436

Re: what am I doing wrong

I typically give an extra millimeter or so if I'm not sure the substrate is completely level. How much material is left after the last pass? Is it consistent all the way around? How accurate is your measuring device? How deep are your passes? If it's just a hair left I'd assume it's a measuring thin...
by DanMc
Mon Oct 09, 2017 12:17 am
Forum: Lounge
Topic: Shapeoko 2 500mm x 1000mm waste board
Replies: 5
Views: 558

Re: Shapeoko 2 500mm x 1000mm waste board

Yes, plenty of S2 owners still here, it's a shame the community got split with the advent of the S3. To answer the OP's question, easiest thing do do is a slab of mdf, just make sure it's big enough to screw the frame down to. The cuts don't have to be neat so any kind of saw will do, you could also...
by DanMc
Thu Jan 19, 2017 4:31 am
Forum: Discussion
Topic: Reasonable expectation of flatness
Replies: 5
Views: 411

Re: Reasonable expectation of flatness

I use mdf. If I'm working on something critical I'll tram a second sacrificial board specific to that job, but then I usually mill a jig specific to each project or series anyway with holddowns where I need them. Even with something that won't swell is the table the machine is resting on stable to <...
by DanMc
Fri Sep 16, 2016 11:06 am
Forum: Member Projects
Topic: First brass project - Labels
Replies: 9
Views: 1664

Re: First brass project - Labels

Looks great! I've got a couple pieces of brass that I've had laying around to play with. Question: did you lubricate at all?
by DanMc
Sun Jul 24, 2016 8:47 pm
Forum: Electronics
Topic: Question...pulse/rev on driver vs. steps/mm in GRBL
Replies: 2
Views: 1019

Re: Question...pulse/rev on driver vs. steps/mm in GRBL

The pulses/rev is a way of representing microstepping. On that drive all switches off would equal 200 steps/revolution, if you set it up for microstepping you would need to multiply that factor by whatever your calculated steps/mm number is. I believe it also shows the microstep on the table, I'd ig...
by DanMc
Tue Mar 22, 2016 4:41 pm
Forum: Software - CAD, CAM, Workflow Help
Topic: mach3
Replies: 3
Views: 413

Re: mach3

Sounds like you need to examine your ports and pins settings, as mentioned above videos are a big help as is the Mach forum. Mach3 demo is fully functional, it's just limited to how much code it will run.