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Simple problem made worse - need some advice  

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doggiefizzle
(@doggiefizzle)
Active Member
Simple problem made worse - need some advice

Hi all, I have a stock mk3s+ that's been in service for a couple of years. I was dialing in a calibration when I moved to a textured PEI sheet and I scraped some filament too aggressively where the thermistor is and shorted it. I am now getting a "Err: Mintemp" on the screen.  After some research, it looks like a fresh thermistor will get me back on track.  I ordered it and started to prep the printer for the swap.

I could not turn the 1.5m screw that holds the thermistor in place and I can't get the printer to heat up, so I applied some heat from a heat gun.  Apparently the tiny adapter I was using to direct the heat was not tiny enough, the superPINDA arm and shaft warped.  The PINDA has no friction and is laying off-level. 

1. Is there a way I can free up the screw holding the thermistor or any tricks that may help?

2. What is the best way to fix the PINDA arm.  Should I order a new part? Anyone know what that part is called?

Thanks in advance!

PS, man this forum is running slow today!

Posted : 27/04/2024 4:48 pm
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: Simple problem made worse - need some advice

Prusa have been advised that the forum is slow in many areas of the world. 
If you describe where in the world you are, someone local may print a part for you?  
Maker spaces. Hacker spaces or some libraries may be able to help with Printed parts, 
JLCPCB offer 3D printing services, 
Etsy shops may offer parts services, 
Of course Prusa  also offer parts services, but courier delivery may be a prohibitive price/ 

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

Posted : 27/04/2024 11:50 pm
Artur5
(@artur5)
Reputable Member
RE: Simple problem made worse - need some advice

The PiNDA arm is integrated in the main body of the extruder. To replace it you’d need to disassemble practically the extruder from scratch. Yes, a PITA...

The part name is, unsurprisingly,  ‘extruder-body.stl”.

https://www.prusa3d.com/en/product/extruder-body-mk3s/

 

Posted : 29/04/2024 6:04 pm
doggiefizzle
(@doggiefizzle)
Active Member
Topic starter answered:
RE: Simple problem made worse - need some advice

Yep, I pretty much did this!

Posted : 06/05/2024 3:36 pm
Zappes
(@zappes)
Reputable Member
RE: Simple problem made worse - need some advice

Where are you located? If it's in Europe, preferably in Germany, I could print the part for you and send it over.

My models on Printables
Posted : 07/05/2024 10:35 am
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