stripped hotend screw - stuck filament
unable to remove hotend due to over torqued screw now stripped. I am not sure what was used to torque the screws for the MK4 hotend, but i could get 2 undone with the provided tools but the 3rd is now stripped. I have stuck filament in the unit and I wanted to remove the whole hotend but now that is not an option - what can I do?
RE: stripped hotend screw - stuck filament
update:
i had to unscrew the whole hotend and then take to the shop and use a blowtorch just to get a needle to go into the tube. After using a few needles and pushing extremely hard with some new filament, the filament is now able to go through the whole assembly.
I just dont know what to do about the stripped screws now.
RE: stripped hotend screw - stuck filament
Can you drill it out? You'd want a drill bit withe dame diamter as the minor diameter of the screw and a left-hand drill is often best.
update:
i had to unscrew the whole hotend and then take to the shop and use a blowtorch just to get a needle to go into the tube. After using a few needles and pushing extremely hard with some new filament, the filament is now able to go through the whole assembly.
I just dont know what to do about the stripped screws now.
RE: stripped hotend screw - stuck filament
They may very well be glued in. So you’d want a drill press to drill them out, retap the threads.
It’s probably easier to buy a third party heat block, or wait until Prusa sell spares. If it’s working as is I’d hold tight and wait.