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Jonathan
(@jonathan-11)
New Member
Plastic connector to heatbed melting

I just noticed the plastic connector to my heated bed is melted. It is not particularly hot now during a print and may have happened over a long period of time (I wasn't checking!). Is this okay or a sign that something is going wrong?

Posted : 13/05/2020 8:22 am
Matteo Cristini
(@matteo-cristini)
Reputable Member
RE: Plastic connector to heatbed melting

Something has gone wrong here, probably a bad connection that creates too much resistance and heats up. Definitely not meant to happen, check the connection as soon as possible! 

I see your printer is a mk3, was it a kit? Oh, and this is supposed to be the prusa mini forum, you might want to move the thread...

 

Posted : 13/05/2020 8:51 am
Jonathan
(@jonathan-11)
New Member
Topic starter answered:
RE: Plastic connector to heatbed melting

@matteo-cristini

Thanks for the advice

oops! apologies, I didn't realise that. I will check it out and reprint, if it messes up again I will post to the right forum, thanks for the help!

Posted : 13/05/2020 2:27 pm
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: Plastic connector to heatbed melting

Hi Jonathan, 
I have moved the thread for you. 
the heating seems centered around the screw and the connector
can you please check that the stainless steel washer is NOT between the loop cable crimp end, and the copper pad on the heatbed. this is a common error.   
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 : 14/05/2020 12:41 am
Fall711 liked
Jonathan
(@jonathan-11)
New Member
Topic starter answered:
RE: Plastic connector to heatbed melting

Yes, that is exactly what I had done. Thanks for pointing it out, hopefully fixed now!

Posted : 14/05/2020 6:34 pm
Fall711 liked
Fall711
(@fall711)
New Member
RE:

Hi,

Thank you so much for the tips. For some reason I made the mistake on my printer and I switch the washer's position on the VCC side but GND side was ok.

Problem solved.

This appears as I printed my first PETG prints causing the issues as the bed temperature was significantly higher compared to PLA.

Thank you !

This post was modified 2 years ago 2 times by Fall711
Posted : 31/08/2022 10:36 pm
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: Plastic connector to heatbed melting

Simple error, confusing result... 

you would think, metal, is metal, conducts electricity.... 

But all metals, are not equal... 

All sorted now!

🙂

 

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 : 01/09/2022 2:29 pm
Fall711 liked
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