[Involute]

I'm bringing up my milling machine after replacing its ancient WinXP PC with a new Win10 one and a SmoothStepper. I thought I had everything dialed in, so I ran a program (admittedly a new one I'd never run before), and it stopped mysteriously about 85% of the way through (line 4990 out of 5660). I can't figure out why. I've attached a screenshot of Mach 3 showing the line it stopped on, a copy of the G code (generated by Cut2D from my drawing), and a photo of the part after the machine stopped (it was milling out that central pocket). Also, the spindle stopped gradually, like it was using Mach 3's deceleration parameter, not abruptly. Any ideas what's causing this?

PS - I realize the cutout profile should have been cut last, but in my zeal to get the program running I didn't realize I saved it in the wrong order. The tabs held everything together just fine, though.

[Jim Dawson]

It looks like that N5000 is just repeating over and over on the screen shot. Looks like Mach3 is confused. I just ran your code on Mach3 and it seems to work fine, except the unclosed comment in the first line.

[Involute]

Huh. I was so focused on 4990 I didn't even look at 5000. That's crazy, especially since the code isn't written that way, as you can tell in the pdf. I'll load it up again tomorrow and see if I can duplicate it. I've used Mach 3 for years, though I'm hardly an expert, and I've never seen that happen. Thanks for pointing it out.

[Involute]

Btw, the first line sure looks like a closed comment to me. Can you explain why it's unclosed? Thanks.

Here are the first few lines, for reference:

( 1Mill_250.tap )
( File created: Friday, May 29, 2020 - 01:11 PM)
( for Mach2/3 from Vectric )
( Material Size)
( X= 3.550, Y= 3.200, Z= 0.400)
()
(Toolpaths used in this file

[Jim Dawson]

Sometimes it just takes another set of eyes to look at the problem

Btw, the first line sure looks like a closed comment to me. Can you explain why it's unclosed? Thanks.

Here are the first few lines, for reference:

( 1Mill_250.tap )
( File created: Friday, May 29, 2020 - 01:11 PM)
( for Mach2/3 from Vectric )
( Material Size)
( X= 3.550, Y= 3.200, Z= 0.400)
()
(Toolpaths used in this file

I guess it was the second line. In the PDF, it was split into 2 lines like this:
( File created: Friday, May 29, 2020
- 01:11 PM)

Only took a second to find that one.

[ger21]

It looks like it's running in Demo mode, stopping at 500 lines of code. Is it actually licensed to you (Richard Lowe?), or is it a license that's been passed around?