Tried cleaning plate, different plates, (pictured is glacier, has good adhesion and 2 brand new .4 hardened steal nozzles) but still, the printer keeps knocking off the print half or 3/4 way though on most prints. Here we have Bambu white PLA. Pretty standard stuff.
In general, I can’t ever print anything vertical, horizontal usually survives ok.
Any suggestions on things I could check? Possible over extrusion causing the top of the print to be bumpy so the nozzle bumps it or something? Any hints appreciated. Will try to upload image and time-laps. Most settings are default.
As you can see in the image, the pieces have been ripped from the brim that is still on the plate. They are not just falling off the bed or something. The head is hitting the top of the print wrong for some reason.
Timelaps only shows that it failed suddenly and leaves spaghetti when a piece gets knocked off. This print I turned off the a.i. detection and let it continue to knock the rest the pieces off (I was hoping some would make it at least… )
I wonder if this happens more often on H2D mainly because of the extruder motor being a servo. I have had this theory for a long time now:
normal printers uses steppers, which skips when the resistence is too large
H2D uses servos, which… enforces extrusion until it reaches overload current
normal printer would simply give up when the back pressure is too high
H2D would go on anyway, and it’s a strong servo
H2D knocks parts off more often when the part itself is weakly attached to the plate/to other printed parts
So for a part that is unstable or have too little support on the bottom surface, it would be pushed to death more often. Because it cannot bear the extrusion pressure. I’ve seen this multiple times with realtime videos, where my part just falls off during normal printing. This is a important hint because if it’s not something that can be fixed by z-hop (nozzle is not bumping on the part during travels, nozzle is simply printing normally but it’s the part who cannot withstand that).
