During prints with Bambu Studio, the toolhead sometimes - very rarely - drives to the right side and down to zero height, beyond the right edge of print plate. Why does it do that? For the camera? I have video off though. In this non-printing phase, a noodle of filement flows out of the toolhead which is not cleaned before the printing resumes.
It does this to check for filament clumping on the nozzle. As long as the nozzle can drop down below the rear corner of the plate it assume the nozzle is clear and the print is adhering to the plate. If it hits something, then it knows there’s something stuck to the nozzle (like a clump or even the entire print if it’s small as has come loose from the plate) it will alert you to a problem.
I noticed the same behavior. With some filaments, like regular PETG, it results in a few cm of filament flow dangling on the print nozzle which gets stuck at the print. Easy enough to remove if it’s a flat surface. Is it possible to disable that “clumping” check.
1 Like
You can reduce it to once per print, but you can’t eliminate it completely (at least not without manually customizing the g-code). On the printer screen go into settings and then print options. There should be an entry for nozzle clumping detection. If it’s on it will check several times in a print. If it’s off it will check one time during the 3rd layer. It will print the walls of layer 3 then do the check before it starts any infill, that way any blemish should be in an interior area and not visible on the finished print. Any stringing from the nozzle movement likely will contact the outer walls, but should be very easy to pull off when the print is finished without leaving a permanent blemish.
I see. Thanks for the info.
Aha never realized the move was nozzle clumping detection. Thanks!