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Shaft will NOT budge - New Problem now  

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megan.s
(@megan-s)
Eminent Member
Shaft will NOT budge - New Problem now

I am starting to put this idler together, and the first bearing is killing me. The shaft bar piece just WILL NOT budge. It goes almost to the bearing and then won't go further. To make sure it wasn't just me, I tried the other holes and those are fine (so I removed them without issue to go back to step 1), but this first one seems like it's getting stuck. I can't see any obstructions, though.

Does this one just require a ton of force? Or is my part faulty?

Posted : 18/11/2018 7:03 pm
megan.s
(@megan-s)
Eminent Member
Topic starter answered:
Re: Shaft will NOT budge

I GOT IT. I used the screwdriver for applying force instead of the allen key. Now I'm good.

Posted : 18/11/2018 7:17 pm
megan.s
(@megan-s)
Eminent Member
Topic starter answered:
Re: Shaft will NOT budge - New Problem now

So I jumped the gun. The 4th bearing will not move AS freely as the other 3. The other three will spin, the 4th will not, but still moves. Nothing is obstructing it that I can see, and support told me it could be the shaft and to use another, only I cannot get the other bearings out to get to this one. The bearings block the allen key from getting to the shafts on the opposite sides (I have a video of me just gently pushing the allen key to get to bearing #3, and it just hits bearing #2). I could barely get them in to begin with.

The only solution given to me is to literally break it apart, and print a replacement idler myself. So I am irritated to say the least.

Before I do this I hope someone else on the forums has a better suggestion than this, because it's a little annoying I can't even get the first steps in this build done.

Posted : 18/11/2018 8:24 pm
JuanCholo
(@juancholo)
Honorable Member
Re: Shaft will NOT budge - New Problem now

your going to have to get or make a smaller tool so you can start to hit the shaft out around the bearing.
you can use any tooling steel that will have clearance to hit the shaft once it starts to move then it will get easier.

these machines need a hobbyist mind set for assembly you always have to look a part over and possibility clean it up before assembly.

they do make center punch tools in different thicknesses you can also go to a local hobby shop and get some tools or you can make tools you could use a small diameter of panio wire or if you have cutting tools you could reshape an extra thin allen key that is long enough so you sharpen the end enough to clear the bearing to hit the shaft.

with the part disassembled then you have to go through the process of what went wrong.

if i had to guess;

the tightness of the material where you rammed the shafts in most likely shaved PETG off the sides it went down into the bearing area and wedged the bearing chase against the lower face of the part. if you had some hobby blades or thin scrappers then you could work on the sides of the window where the bearing is and clear it up a little allowing the bearing to spin free.

basic rules is never force anything always check for obstructions and clean as needed with tooling.

“One does not simply use a picture as signature on Prusa forums”

Posted : 18/11/2018 11:21 pm
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