# Problem resuming laser picture after an error

**URL:** <https://forum.avidcnc.com/t/problem-resuming-laser-picture-after-an-error/6641>\
**Category:** General Chat\
**Tags:** lasers\
**Created:** [October 5, 2026, 8:16pm UTC](https://forum.avidcnc.com/t/problem-resuming-laser-picture-after-an-error/6641 "2026-10-05T20:16:43Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![RogerW](https://avatars.discourse-cdn.com/v4/letter/r/3da27b/32.png) [@RogerW](https://forum.avidcnc.com/u/RogerW)\
**Post date:** [October 5, 2026, 8:16pm UTC](https://forum.avidcnc.com/t/problem-resuming-laser-picture-after-an-error/6641/1 "2026-10-05T20:16:43Z")

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I am working on a large laser picture 52"x29" that the gcode file has over 807 million lines (including comments). After etching 359 million lines, I had a network error that stopped the machine. I have not been able to determine why the network error since the machine is isolated and I have implemented all of the PC setup steps. Anyway, I restarted the file (it takes a little over an hour to load) and that process missed the gcode line F 250, that sets the laser motion to 250 inches per minute. This caused the laser to slow down in certain sections over cooking the etch. To recover I made another gcode file that included the correct preamble with the F 250 command that started on the last xy line where the initial error occurred. This worked fine.

So I thiink that there is a problem with restart not including the F xxx commands.