Controller restarted unexpectedly and trying to resume

[danielheth (Daniel)]

I’ve been working on my aluminum carving skills and have run into a rather annoying problem.
I know there are efficiencies I could improve with my file, but it is a 14hr roughing pass of a 3d carve output from CarveCo.

Roughly 6hrs in (don’t know exactly) I turn around and see the controller restarted unexpectedly and it’s in an undefined state.

I did the only thing i could do which is to hit resume but that screen went way… then hit ok on the error message.

I’ve validated the X, Y, and Z are all still set correctly, but I have no way to restart the file at X percentage.
How do I fast-forward through this file to a point I believe it died at in order to resume where I left off?

Out of all of the things I’ve done with other machines, this HDM is still fully stock.
I’m a programmer and can read gcode but the proper sequence of events to recover from something like this is not as clear.
I assume i’ll have to edit the original gcode file… but what exactly do I cut out?

Here’s the start of the file, at what point to i start snipping commands till i “think” it’s somewhere close to where it left off?
And will the machine simply move to that exact location and resume?

(Mando-Rough2.HDM)
(STOCK/BLOCK) (X=6.000, Y=6.000, Z=0.470)
G90 G94
G17
G20
(Tool Number:1 0.145 inches dia. slot drill)
G28 G91 Z0
G90
T1 M6
S20000 M3
G54
G0X0.0000Y0.0000Z0.5000
(Rough2)
G0X0.7778Y0.0000Z0.5000
G0Z0.5950
G1X0.0000Z0.4579F5.0
G1X6.0000F10.0
Y0.0577
X0.0000
Y0.1154
X6.0000
Y0.1731
X0.0000
Y0.2308
X6.0000
Y0.2885
X0.0000
Y0.3462
X6.0000
Y0.4039
X0.0000
Y0.4615
X6.0000
Y0.5192
X0.0000
Y0.5769
X6.0000
Y0.6346
X0.0000
Y0.6923
X6.0000```

[danielheth (Daniel)]

Ok, found a great way to recover. Since the machine remembered the X, Y, and Z…
I moved the Z so the bit was just above where i thought it left off. Recorded the Z and went searching in the gcode for the Z command. Found one that was just above where i thought it left off and removed everything “after” the “(Rough2)” to that line.

I used the G0 command as “sections”… and removed each G0 section till i got to the Z level i thought it left off at.

Running the new machine, and although I am cutting air… at least it appears to have picked up just before it left off.

[Able (Donovan)]

When it comes to 3d carving it helps to rough with a larger mill and bigger step downs then come back with smaller tools. It will save a ton of time vs running a small mill with a shallow step down.

A 1/4" or even a 3/16" mill would rough that down significantly faster. I found I can push a 3/16" single flute at 100% doc much harder than I thought.