Calibration Not Working for PETG

Bambu Lab Software
1

The flow rate calibration for petg is not heating the bed like it should. I selected manual calibration, high temp plate, 70 degrees for bed temp is the default, and petg for the filament. When it goes to print the pattern the build plate is 0 degrees. It did this several times. Automatic seems to be working so far.

First post describing a problem here, let me know what I forgot.

Studio 1.7.0.53
Default calibration profile

Mike,

2

Studio 1.7 is still a beta version. Issues are best reported on GitHub: Issues · bambulab/BambuStudio · GitHub

3

I can do that as well.

Thanks, Mike

4

Your problem might be the same, or related to, Wrong hot bed temperature during manual flow rate calibration · Issue #1994 · bambulab/BambuStudio · GitHub

1 Like
5

I reported same issue a few days ago, but I see that this is wrong site to do that. The problem is real since both of us experienced it, I’ll also try to report at Github

6

When you say default calibration profile, which one? Bambu PETG or Generic PETG? I’m tuning off of Generic PETG right now and the bed is static at 70.

7

Generic profile. Someone mentioned that it defaults to the cool plate settings and after some checking that’s correct. For the generic petg settings the cool plate is set to zero. The pla profile I use the cool plate is set to 45c so I didn’t notice.

8

That’ll do it :slight_smile:
I also had to add the 29.1 command to my startup script in petg settings to prevent death wisps and offset z by .03 above what default profiles on the printer are for Generic PETG. So far .03 is working nicely. And a little bit of kapton on the wiper. Too much was being missed on the wipes without the kapton. Seems at least the roll of petg I have MakeShaper btw, doesn’t give a ■■■■ about PTFE lol
Random tidbit…

; filament start gcode
{if (bed_temperature[current_extruder] >60)||(bed_temperature_initial_layer[current_extruder] >60)}M106 P3 S255
{elsif (bed_temperature[current_extruder] >45)||(bed_temperature_initial_layer[current_extruder] >45)}M106 P3 S180
{endif}
G29.1 Z0.03

9

Beta 2 is out and seems all issues are fixed…for me, and I can use it for my p1ps now too.