this post was submitted on 26 May 2025
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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.

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[–] fulg@lemmy.world 18 points 6 days ago

Oof, I can smell this picture. 🤢 Good thing you caught it before it burned.

[–] papalonian@lemmy.world 2 points 6 days ago

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.

[–] roofuskit@lemmy.world 2 points 6 days ago (1 children)
[–] _thebrain_@sh.itjust.works 8 points 6 days ago (1 children)

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 points 6 days ago (1 children)

tronxy x5sa-400

Ah you too decided to torture this printer.

[–] _thebrain_@sh.itjust.works 3 points 5 days ago (1 children)

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 points 5 days ago

I'm starting to build a voron trident on it.
For now I stripped everything and only have the base frame.