Screws don't tighten
Hi, I bought my printer assembled. I just recently took the extruder apart to clear a troublesome clog. Now that I'm putting it back together, I noticed that a couple screws don't seem to tighten at all.
The lower rear/left heatbreak fan screw doesn't tighten. Nor does the upper left screw in the extruder body. I don't see where a nut is located. Do these screws just float and rely on the others? I don't think it was stripped, as they never gave any indication that they were tightening.
Thanks,
John
Re: Screws don't tighten
John,
Seeing nobody responded yet, I try my best - not really good at this 😉
See the matching steps in the build manual here (for MK2S): http://manual.prusa3d.com/Guide/5.+Extruder+Assembly/295
if i recall correctly, the hotend fan has no nuts, it screws into the printed part.
The upper left screw in the extruder body.. i think we're talking the one marked in blue here in Step 7:
http://manual.prusa3d.com/Guide/5.+Extruder+Assembly/295#s4978
if so, that one is a slightly longer M3x25 screw, and it has a nut (see 3rd picture in Step 4)
Hope this helps. Otherwise, consider it a *bump*
Re: Screws don't tighten
Thanks that was exactly what I needed. I had two of the screws in the wrong places.
All back together now, and printing a batman logo.
John