Extruder Idler (MK3)
Long story short, the plastic extruder idler axle mount snapped and I am borrowing a printer to print a new one. I am however, running into one problem. What is the best way to print this thing? I've made an attempt with supports so that the mounts for the square nuts do not collapse into themselves, but the supports overfill the mount itself and it is a nightmare trying to get them out. Should I use a different type of support? Adjust support settings? Or am I just being paranoid of the results and those mounts can handle being printed without supports?
My printer is effectively decommissioned as I figure this out so I do not have a lot of time to troubleshoot this myself. I am borrowing the functionality of a printer that belongs to someone I know. What is the best way to get this printed without those nut mounts becoming an issue?
Re: Extruder Idler (MK3)
No supports and print it with the large flat side down (outer of door). Those roofs are supposed to be bridged. Use Prusa 0.15 or 0.2mm profile, perhaps with some bumped up perimeters and infill.
Re: Extruder Idler (MK3)
Printed one last night. No suppprts..
Took a long 3mm screw in my battery drill. Held the chuck on the cap head end of the screw. Tightened chuck. Pressed end of screw against the bondtech bearing shaft hole in the trap door. And ran the drill backwards whilst pressing the screw into the bearing hole. Pressed gently and the screw drilled a hole through tge bocdtech idler mounting ear
Repeated the same thing on the other side. And then my bearing pinfitted in without breaking the nounting ears
Regards Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK
Re: Extruder Idler (MK3)
Thank you. I actually ran a quick minimal support when I had posted this the night before and it worked just fine. It printed well, and my Prusa is officially back up and running. Thank you for the answers, I wanted to be sure I had other methods to work with once I awoke in the morning if my latest attempt didn't work.
The snapped piece was completely my fault. While initially assembling the printer I had placed the extruder gear in the wrong orientation by mistake. Cracked the plastic of the idler trying to remove the axle to correct it. Lasted through a sizable print like this, but as soon as I actually made the move to print replacement parts it fell apart. In hindsight I should have done it sooner, but all is done and over with. Thanks again!