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Pinda holder melted/broken  

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DeCe1
(@dece1)
Utenti
Pinda holder melted/broken

Hi guys!

After an eternity, I finally got around to upgrading my MK3S+ to 3.5 and immediately put the Prusa enclosure into operation.

The first prints were unsatisfactory, despite various calibrations - really bad.

Yesterday evening I started another print with a different plate, today I noticed that the print had come loose and the Pinda holder was broken or melted - I wasn't able to inspect it very closely in the morning because there was filament sticking everywhere. Here is a photo: https://ibb.co/BSrvRJY

Since I have to print some things in the near future, I would like to keep the downtime as short as possible, hence my question: What do I have to pay attention to so that I print the correct part? Are those the right parts I have to print to resolve my issue? e.g. this one: https://www.printables.com/model/777092-mk3s-extruder-body-with-alternative-pinda-mount or in 2019 there was apparently the problem here in the forum several times, where these optimized parts were recommended: https://www.thingiverse.com/thing:3645975/files Maybe someone can support me briefly and tell me how best to proceed 🙂

Thank you!

Postato : 06/03/2025 10:53 am
FoxRun3D
(@foxrun3d)
Illustrious Member
RE: Pinda holder melted/broken

I don't know. Hundred of thousands of users are doing great with the standard PINDA holder, so I wouldn't just attach something to buy print that some random person has concocted (especially not the thingiverse thing that looks like a major replacement). If you're concerned about sag, print it in ASA. Usually I would recommend PC-CF but it may be too stiff for this use case. And make sure you keep the door open when you print PLA and PETG in an enclosure. 

Formerly known on this forum as @fuchsr -- https://foxrun3d.com/

Postato : 06/03/2025 1:34 pm
1 persone hanno apprezzato
DeCe1
(@dece1)
Utenti
Topic starter answered:
RE: Pinda holder melted/broken

Thank you for your answer.

I wasn't able to find the original Pinda holder, that's why I posted the other links. - while writing I had a look again and found the extruder parts in e axis folder so my hole post makes no sense any more 🙂

One last question: "keep the door open when you print PLA and PETG in an enclosure" - why? the temp isn'r raising to high inside (about 35 degrees). 

Thank you very much!

Postato : 06/03/2025 2:11 pm
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: Pinda holder melted/broken

with PLA. the increased temperature inside the enclosure, is likely to cause heat creep and subsequent extruder  jamming

I print PLA with the enclosure doors open
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

Postato : 06/03/2025 8:34 pm
2 persone hanno apprezzato
FoxRun3D
(@foxrun3d)
Illustrious Member
RE:

EDIT: Sorry, misread your post. Now I see you did find the file.

Prusa makes STLs for all plastic components available on Printables. The Mk3.5 has the same extruder as the Mk3S+, and those parts are at https://www.printables.com/model/57217

Specifically, you want to look for extruder-body.stl in the E-Axis directory of Files.

Formerly known on this forum as @fuchsr -- https://foxrun3d.com/

Postato : 06/03/2025 10:37 pm
1 persone hanno apprezzato
Antimix
(@antimix)
Honorable Member
RE: Pinda holder melted/broken

Hello,

I learnt that every mod can create problems, unless you have a fully understanding of the original design and the mod design, and know how to handle side effects.

It happened also to me that with a wrong PINDA settings (I set it too near the bed), and long print with bed at 80/90° the Pinda bracket bended and I had to reprint the whole extruder part. This is the original Mk3S part (extruder-body.stl).

Verify if there are new versions for MK3.5S and in case print THE WHOLE new part (e.g. the old half Extruder may not match with the new half part).
May be asking someone to print it in heat resistant materials like ABS or PC could help in the future.

Regards

Postato : 11/04/2025 5:13 pm
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