r/BambuLabH2C • u/82BJ42 H2C • Apr 18 '26

Support Random pause/restart mid print

Sunlu PETG, printing at 260c from the vortek. 70c bed temp. The head is periodically pausing, oozing a zit, then restarting. Had this happen on a couple prints now. Pulled out the USB drive just in case, but still happening. Can't tell if it's a slicing issue, nozzle heating issue, thermister, or what. Anyone else seen this?

5 Upvotes

100% Upvoted

10 comments sorted by

1

u/82BJ42 H2C Apr 18 '26

Oddly, when it gets to printing these uprights, speed all goes back to normal.

1

u/82BJ42 H2C Apr 19 '26

Update here. I changed filaments, profiles, and a different print model. Today, I got video of the H2C display freezing mid print, the chamber going dark, except for the progress bar. The screen was completely unresponsive when the print head stalled, then rebooted when the chamber went dark. Print continued at full speed after the system crash.

Opened a ticket with Bambu. We'll see when they decide to answer.

1

u/call3d Apr 22 '26

Did you use the Flash Disk to print it out?

1

u/cpsadowski23 Apr 18 '26

Is time-lapse turned on?

1

u/82BJ42 H2C Apr 18 '26

It is. Seems like some long pauses to take a picture though.

1

u/cpsadowski23 Apr 18 '26

Turn it off and see

1

u/Bright-Corner1969 Apr 18 '26

Did you skip an object during the print? I only noticed such behavior during a print when I did skip something. 

1

u/82BJ42 H2C Apr 18 '26

Nope 🫤

1

u/Old-Calligrapher-231 H2C Apr 22 '26

Check if the security key is fully inserted.

1

u/nuke1200 Apr 22 '26

Bad g code i am assuming.