A1 calibrating before every print even though boxes deselected

Bambu Lab A1 Series Troubleshooting
1

Hi all, I have a new A1 since this weekend. I have the vibration calibration and bed leveling checkboxes unchecked, both on the printer touchscreen and in Bambu Studio. Yet the printer still seems to be doing a vibration calibration and bed leveling before every print, which delays the start of the print and is annoying especially for small prints, Anybody knows why that is happening or how to disable it?

2 Likes
2

Looks like the preparation time is always around 6 minutes, even with all calibration deselected. It’s super annoying for small prints that would take 5 minutes, it more than doubles the time… I just want the damn thing to heat up, wipe and start printing!

3 Likes
3

I have the same problem and hope for a solution

4

I wrote Bambu support and they say it’s unavoidable… I think it could be greatly optimized. First the nozzle heats to about 230C and flushes out some filament. Then it waits to cool down to about 140 and does vibration tests and some bed leveling. Then it heats up again to 220 for PLA, wipes a few times, dumps some more filament and THEN it starts printing. For at least a minute it appears to be just setting still doing nothing i.e. no change in temperature.

4 Likes
5

i personally havent paid attention to the prep time, im just happy the overall print time is incredible in most cases…

i would think of it as a good thing though all that prep work is probably making sure your print turns out great … just like with painting, prep work is key to good results… the bed leveling is probably due to the fact people like myself, take it off after every print to flex it to remove prints, in that case the bed leveling might fix some minor issues possibly encounterd by putting the plate on the magnetic bed slightly different orientation

2 Likes
6

I found the settings responsible for this calibration.
Go to the printer section, select the printer you want to edit from the drop-down menu.
Click on the notepad-style icon on the right to open the specific printer settings

1
1887Ă—433 30.8 KB

The Printer settings modal window will popup. Select Machine gcode tab. We are interested in the Machine start G-code;

You can copy the g-code in to more frendly editor and look at line 234 with headline: mech mode fast check start (for my A1 printer, I assume for the different printer there will be different line). I think this block of code is responsible for that annoying vibro-test. Haven’t tested yet.

2
2416Ă—648 18.5 KB

So, I think we can cut out some blocks from Machine start G-code. Can someone collaborate on this? Someone who have more experience and can safely remove redundant blocks.

7

Did some tests today:
removed mentioned above part – everything between “mech mode fast check” start and end comments. And it stopped doing annoying “brrrr” (vibration calibration)!! :smiley:

My 3d model was printed successfully after that. So you guys can do the same

1 Like
8

works perfectly for my A1
thanks

9

There is someone who optimized the a1 mini g-code to make prints start faster here, probably a way to take what they learned and do the same for the a1, someone already did the vibration calibration removal one for the a1 and posted it in that thread too. It’s over here: Optimized A1 mini Start G-code (Quick and Quiet version) - #64 by A1Mini_Prints

1 Like
10