# Altmill isn't Altmilling **URL:** \ **Category:** ❓ Something's Up\ **Created:** [September 25, 2026, 7:33pm UTC](https://forum.sienci.com/t/altmill-isnt-altmilling/27165 "2026-09-25T19:33:09Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![CrayonEater](https://forum.sienci.com/letter_avatar_proxy/v4/letter/c/e36b37/32.png) [@CrayonEater](https://forum.sienci.com/u/CrayonEater)\ **Post date:** [September 25, 2026, 7:33pm UTC](https://forum.sienci.com/t/altmill-isnt-altmilling/27165/1 "2026-09-25T19:33:09Z")
My Altmill was working fine yesterday, today it isn’t working at all. When I try to run G-code from Vectric Pro, it goes into hold mode and gives me a series of Error 38 messages. If I click Start again, gSender acts as though it is carving while nothing happens. I can home the machine, activate the spindle, and move it about normally. Things I have done: 1. Made sure Vectric is using the correct grblHAL. I even deleted it and downloaded it again. 2. Tried running a file that was working fine yesterday- same result, implying this is a machine issue. 3. Reset gsender to factory settings and reinstalled my spindle and touchplate. No change in results. 4. Of course, several shutdown/reboot cycles. 5. Ensured all bits and selections were correct in Vcarve. 6. Tried not to invent new words or compare my shiny new CNC to the FoxAlien brick I started with. Any thoughts, remedies, or new swear words would be appreciated. ---
**Author:** ![gwilki](https://forum.sienci.com/user_avatar/forum.sienci.com/gwilki/32/366_2.png) [@gwilki](https://forum.sienci.com/u/gwilki)\ **Post date:** [September 25, 2026, 7:40pm UTC](https://forum.sienci.com/t/altmill-isnt-altmilling/27165/2 "2026-09-25T19:40:38Z")
@CrayonEater I would advise you to open a support ticket, Ian. You may get some help here, but this is a user forum, not tech support. ---
**Author:** ![Chucky\_ott](https://forum.sienci.com/user_avatar/forum.sienci.com/chucky_ott/32/8692_2.png) [@Chucky\_ott](https://forum.sienci.com/u/Chucky_ott)\ **Post date:** [September 25, 2026, 8:20pm UTC](https://forum.sienci.com/t/altmill-isnt-altmilling/27165/3 "2026-09-25T20:20:04Z")
@CrayonEater Error 38 or Alarm 38? Error 38 seems to be related to a tool change, so possibly an ATC-related issue? Do you have an ATC? Are you able to go to the surfacing tool, create a job, and run the g-code generated? ---
**Author:** ![CrayonEater](https://forum.sienci.com/letter_avatar_proxy/v4/letter/c/e36b37/32.png) [@CrayonEater](https://forum.sienci.com/u/CrayonEater)\ **Post date:** [September 25, 2026, 8:21pm UTC](https://forum.sienci.com/t/altmill-isnt-altmilling/27165/4 "2026-09-25T20:21:57Z")
Just did that. Had to spend some time looking up how to create a diagnostic file. ---
**Author:** ![Chucky\_ott](https://forum.sienci.com/user_avatar/forum.sienci.com/chucky_ott/32/8692_2.png) [@Chucky\_ott](https://forum.sienci.com/u/Chucky_ott)\ **Post date:** [September 25, 2026, 8:23pm UTC](https://forum.sienci.com/t/altmill-isnt-altmilling/27165/5 "2026-09-25T20:23:57Z")
> [@CrayonEater](#): > > or new swear words would be appreciated. I can give you a bunch in French if you want. Very therapeutic. ---
**Author:** ![CrayonEater](https://forum.sienci.com/letter_avatar_proxy/v4/letter/c/e36b37/32.png) [@CrayonEater](https://forum.sienci.com/u/CrayonEater)\ **Post date:** [September 25, 2026, 8:24pm UTC](https://forum.sienci.com/t/altmill-isnt-altmilling/27165/6 "2026-09-25T20:24:19Z")
Nope. I have a TLS- but not installed. I would put it off to some kind of a vCarve issue in generating the gcode, but it does the same thing with a old file that worked just fine and hasn’t been changed. ---
**Author:** ![Chucky\_ott](https://forum.sienci.com/user_avatar/forum.sienci.com/chucky_ott/32/8692_2.png) [@Chucky\_ott](https://forum.sienci.com/u/Chucky_ott)\ **Post date:** [September 25, 2026, 8:25pm UTC](https://forum.sienci.com/t/altmill-isnt-altmilling/27165/7 "2026-09-25T20:25:33Z")
@CrayonEater Hence why I suggest running g-code created from within gSender. And the surfacing tool is where I would do that. Which version of gSender? ---
**Author:** ![KGN](https://forum.sienci.com/letter_avatar_proxy/v4/letter/k/c77e96/32.png) [@KGN](https://forum.sienci.com/u/KGN)\ **Post date:** [September 26, 2026, 1:07pm UTC](https://forum.sienci.com/t/altmill-isnt-altmilling/27165/8 "2026-09-26T13:07:04Z")
Error 38 is a tool out of range error - do you have an M6 in your gcode with a T command that’s over 32 because that’s not allowed - it has to be in the 1-32 range if there is a tool table compiled in like our recent grblHAL firmware releases (or 1-N where N is the size of the compiled tool table). ---
**Author:** ![CrayonEater](https://forum.sienci.com/letter_avatar_proxy/v4/letter/c/e36b37/32.png) [@CrayonEater](https://forum.sienci.com/u/CrayonEater)\ **Post date:** [September 27, 2026, 6:24pm UTC](https://forum.sienci.com/t/altmill-isnt-altmilling/27165/9 "2026-09-27T18:24:52Z")
I was confused by the fact that it cropped up in a file that I had already downloaded and successfully run. I thought it might be a gcode corruption of some kind, so my admittedly low-tech way of testing was to try to run a file that was unchanged and previously worked. When I did that, it produced the same error. I don’t know if that proves anything, but it seemed like a reasonable test to me. ---
**Author:** ![CrayonEater](https://forum.sienci.com/letter_avatar_proxy/v4/letter/c/e36b37/32.png) [@CrayonEater](https://forum.sienci.com/u/CrayonEater)\ **Post date:** [September 27, 2026, 6:26pm UTC](https://forum.sienci.com/t/altmill-isnt-altmilling/27165/10 "2026-09-27T18:26:47Z")
I decided to try to reset everything, and in doing so I flashed the latest firmware. That seems to have fixed the issue! It is Altmilling again! ---
**Author:** ![gwilki](https://forum.sienci.com/user_avatar/forum.sienci.com/gwilki/32/366_2.png) [@gwilki](https://forum.sienci.com/u/gwilki)\ **Post date:** [September 27, 2026, 9:32pm UTC](https://forum.sienci.com/t/altmill-isnt-altmilling/27165/11 "2026-09-27T21:32:11Z")
Closed on September 27, 2026, 9:32pm UTC