Nozzle hits Printer Bed very Hard when I start the new Job
Hello together, somebody an idea what is the reason for this ?
I have many times contact to support of prusa, we exchange the part with load cell, cabel from the Head to the printer, the Connection board in the printer head.
Nothing help.
Before I send the printer for check to prusa i write here, maybe someone have the same failure.
Thanks for your help.
regards, Christoph
RE: Nozzle hits Printer Bed very Hard when I start the new Job
What do you mean by "hitting hard", and when exactly? During nozzle cleaning? Mesh bed leveling?
In my case, I managed to drop tiny bits of plastic on the heatbed wile swapping plates, and didn't notice. Then, when the printer tried to calibrate, it scraped the nozzle on the front part of the plate, and errored out with a crash. The debris between heatbed and plate lifted the plate up just a tiny little bit. It would work sometimes.
RE: Nozzle hits Printer Bed very Hard when I start the new Job
Do you see the video? 2_HARD ?
RE: Nozzle hits Printer Bed very Hard when I start the new Job
Ah, now, overlooked it the first time. Have you contacted support to see if this is within tolerance?
I would've sent a video of my printer, but it's currently inoperable and waiting for a replacement heatsink. It did however also make significant contact with the print head, and flexed it up a bit. Not sure what the tolerances are here, but I always treated it as a "normal" part of initial calibration.
I can't really judge now if yours flexes more than mine, sorry. Better get in touch with support and verify.
RE: Nozzle hits Printer Bed very Hard when I start the new Job
Did you ever figure out if the force was too large? I'm asking because I'm seeing weird bed levelling issues after a failed nozzle swap, followed by a heat sink replacement. Wondering if the load cell is working correctly. During calibration, it says "tap the nozzle", but I had to push with significant force for it to register and continue the calibration.