Search found 53 matches

by sjj47
Thu Nov 21, 2019 9:05 pm
Forum: Software - CAD, CAM, Workflow Help
Topic: G28, moves all 3 axis at once!
Replies: 4
Views: 2320

Re: G28, moves all 3 axis at once!

I'm confused by this. From what I've read on the web, G28 G91 Z0 should move the Z-axis ONLY to the position specified by G28.1 (normally the uppermost position of the Z-axis). Instead, when I execute that string, I get movement in the X, Y, and Z axes simultaneously, back to the G28.1 position. In ...
by sjj47
Wed Nov 20, 2019 12:39 am
Forum: GRBL
Topic: G28 and M30 (program end) issues on Shapeoko 3
Replies: 4
Views: 1543

Re: G28 and M30 (program end) issues on Shapeoko 3

I'm having a similar issue. I normally set up my work so that the bit is positioned at the WCS origin. If I use gcode created by other tools (e.g. MakerCAM) the bit moves to the (X,Y) start of the cut path, then descend on the Z-axis to the material surface and starts cutting. In contrast, the gcode...
by sjj47
Sun Jul 03, 2016 11:55 pm
Forum: Discussion
Topic: Portable stand/Vertical storage
Replies: 4
Views: 966

Re: Portable stand/Vertical storage

The drawback to the design shown is that you still have a large footprint for the stand, whether you have the S3 flat or vertical. I saw a design (on YouTube, I think) for a table that swung down from a wall. Smaller footprint. I had a similar problem. I originally built a table on casters, but foun...
by sjj47
Thu Jun 23, 2016 7:54 am
Forum: Software - CAD, CAM, Workflow Help
Topic: 3D CAM Tool Poll
Replies: 47
Views: 40822

Re: 3D CAM Tool Poll

Maybe we need a separate poll for 2.5 D CAM tools? Both Carbide Create and MakerCAM can't do 3D work, so seeing them here is confusing for a newbie like me.
by sjj47
Sun Apr 24, 2016 9:48 pm
Forum: Software - CAD, CAM, Workflow Help
Topic: S03 suddenly went rogue
Replies: 4
Views: 756

Re: S03 suddenly went rogue - resolved?

Thanks, Will! Your response got me thinking. I had been vacuuming up the dust with hose connected to the shop-vac -- which terminated in a metal tube. Could the flow of air and dust have created a static charge? And then grounded onto the S03 chassis when I inadvertently touched the tube to the rout...
by sjj47
Sun Apr 24, 2016 6:29 am
Forum: Software - CAD, CAM, Workflow Help
Topic: S03 suddenly went rogue
Replies: 4
Views: 756

S03 suddenly went rogue

I was milling a dustshoe prototype when my PC crashed -- the old blue screen of death. After rebooting, I reran the job using bCNC, and after two minutes the bit suddenly drilled down and X-Y movement stopped. No error message on the bCNC. I rebooted the PC again, restarted the job, only to have the...
by sjj47
Tue Feb 09, 2016 8:56 pm
Forum: Software - CAD, CAM, Workflow Help
Topic: Roughing and finishing, again
Replies: 5
Views: 1069

Roughing and finishing, again

I know 3D CAM programs have explicit strategies for roughing and finishing, but right now I'm still struggling with 2D and 2.5D. Suppose I'm cutting a simple pocket 50mm x 50mm x 5mm deep. I want to do a fast, rough pass with a large bit and a slow, finish path with a smaller bit. Is there any softw...
by sjj47
Tue Feb 09, 2016 5:01 am
Forum: Lounge
Topic: A suddenly requested poll — internet in the shop
Replies: 16
Views: 9357

Re: A suddenly requested poll — internet in the shop

I picked up a cheap laptop for a dedicated S03 PC. I design the job up in the (warm) house, and then take the laptop down to my attached shop/garage where the S03 lives. (When we were first married my wife had the crazy notion of parking cars in the shop! Can you imagine? Where would I put my tools?...
by sjj47
Tue Feb 09, 2016 4:52 am
Forum: Design Ideas
Topic: Thoughts on a Shapeoko 4? Upgrades for a Shapeoko 3?
Replies: 14
Views: 5722

Re: Thoughts on a Shapeoko 4? Upgrades for a Shapeoko 3?

4th axis! I know, just a pipe dream. But it would be so cool! :)
by sjj47
Thu Feb 04, 2016 8:38 pm
Forum: Discussion
Topic: Just finished my new base.
Replies: 7
Views: 2852

Re: Just finished my new base.

I just picked up some T-track from Orange Aluminum and have been considering the same issues. Ply would certainly be better than MDF for holding the t-track screws. OTOH MDF is much flatter. My worry about ply is - because it isn't as flat as MDF - I'd have to start every job by tramming the surface...