Reprinting/replacing idler door.
Recently I began to have some printing issues that I traced, hopefully correctly, to wearing/slop in the filament idler door mounting "lugs" for the idler hobbed gear axel. I thought, easy enough to simply print a new one. Went to printables.com, found the item, downloaded and printed the file, but when I started to transfer the old parts into the new print, I noticed the newly printed part is missing some filament constraint geometry at the exit point of the gear that is critical for maintaining the path of the filament, especially flexible types, into the PTFE tube. In the picture, the new door is on the right and the old door is on the left with the geometric feature, basically forming a slot, circled. As I print a lot of TPU, I don't want to take a chance of introducing problems. If not printables.com, where can I find the file I need with the old geometry?
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There are a lot of iterations of the Mk3(+) design, many of us have machines with upgrades that didn't include every step ... I think you are looking for the extruder idler part from:
https://www.printables.com/model/88240-i3-mk3-printable-parts/files
Cheerio,
RE: Reprinting/replacing idler door.
Nope, that's the same one, without the "constraining slot" (if that description makes sense) geometry. Still looking.
Hear ye, Hear ye! Step right up folks and get your Government salvation here! Less than $.002 per word! Amazon.com/dp/B0B8XMMFP4
Hmmm ... it's a tricky search trying to examine all the iterations - best I think to contact Prusa Support with your serial number and the picture above. They will know where to find it or which you should use if there is a superceding part.
Cheerio,