This is my 400mm 110v silicone heat made on my bed. Suddenly nothing would stick toy bed any more, regardless of temp, offset, and adhesion assistance agents. I finally looked at the center of the bed was puffy. I was able to slide a ruler in between the aluminum bed and the pad. It took a bit of elbow grease to pull off the edges. Dunno how close to disaster I was but it's a little too close for comfort. It never overheated in all my use and the thermal fuse is still in tact but the scorch mark is still disturbing.
I would venture to say this is bad
9 Comments
fulg@lemmy.world · 20 pts · 1y
Oof, I can smell this picture. 🤢 Good thing you caught it before it burned.
SoulWager@lemmy.ml · 5 pts · 1y
Looks like the glue failed and so heat was building up instead of transferring.
_thebrain_@sh.itjust.works · 2 pts · 1y
Exactly. I don't know the expected life span of 3m 468mp but apparently I exceeded it in my environment and duty cycle. I'm still working on getting the residue off of the bed however, and I can say that where it stuck, and did not fail, it did an excellent job, even pulling off bits of silicone with the glue.
roofuskit@lemmy.world · 2 pts · 1y
What printer?
_thebrain_@sh.itjust.works · 8 pts · 1y
Custom. It started life as a tronxy x5sa-400 but I think only 2 steppers and the frame are original still. I changed the bed to a 16"^2^ *3/8 thick aluminum tool plate about 5 years ago. It always worked well for me. Unfortunately the silicone mat I used doesn't seem to be made any more. I'm going to try one meant for a creality cr10 S4. I may have to re-machine the mounting holes for the thru holes on the mat tho.
Kuinox@lemmy.world · 6 pts · 1y
Ah you too decided to torture this printer.
_thebrain_@sh.itjust.works · 3 pts · 1y
I have had it since probably 2018? It was one of the original x5sa kits. Honestly it has been a good platform to learn off of
Kuinox@lemmy.world · 3 pts · 1y
I'm starting to build a voron trident on it.
For now I stripped everything and only have the base frame.
papalonian@lemmy.world · 2 pts · 1y
I didn't look super closely at first and thought this was one of those full build plate adhesion tests and was getting ready to say how it was a waste of time to get it that dialed in. Yeah, melting heat mat is definitely a problem.