Heatbed Cable Cover Melting
The heatbed cable cover is melting on my new machine.
In this series of images you can see what happened to the black cover that came with the machine. It looks like the right-hand bolt holding down one of the power leads is generating too much heat. So I reprinted another in Prusament Urban Gray PETG, installed it, and after another 6 hour print it too is starting to melt and sag.
I really didn't notice anything amiss while printing with the initial reel of PLA. I made quite a few prints in the process of getting the machine setup. It really wasn't until I switched over to the PETG material that this started happening. I'm running the bed at 85c which is within the material's specs, and from what I've been reading should be reasonable for the machine too. The room I print in is kept around 20-21c. I'm not keen to leave the printer unattended at this point until I can sort this out.
I'm a new learner at this stage so any suggestions about what might be going on here would be appreciated.
Best Answer by JoanTabb:
Hi Extra-Fox,
I would guess that the 'VCC' connection on your heat bed is either,
1, loose
2, assembled incorrectly, see picture below, - or less likely,
3, the heatbed cable is breaking
as shown in the picture, the washer should be under the screw head, not under the ring connector!
regards Joan
Aaron
RE: Heatbed Cable Cover Melting
Hi Extra-Fox,
I would guess that the 'VCC' connection on your heat bed is either,
1, loose
2, assembled incorrectly, see picture below, - or less likely,
3, the heatbed cable is breaking
as shown in the picture, the washer should be under the screw head, not under the ring connector!
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
RE: Heatbed Cable Cover Melting
And adding to what Joan has said: do not print until you get this resolved. It is a fire hazard and you may be damaging the ECB.
RE: Heatbed Cable Cover Melting
2, assembled incorrectly, see picture below, - or less likely,
as shown in the picture, the washer should be under the screw head, not under the ring connector!
Ugh, it was 2. I thought I was so careful on that part as I read the instructions for assembly on that connection. Somehow I misinterpreted it and had the ring connectors under the board instead of under the washers. So I've corrected this and will reprint an new cover and hope for no further dramatics (or damage).
Thank you Joan. Another set of eyes is just what I needed.
Aaron
RE: Heatbed Cable Cover Melting
You marked this topic as answered - but please tell us what you found.
Every solved problem helps someone else down the line.