Hello everyone, during the last start of the printing process in our Fuse1, the seal of the Build Chamber melted. Has this ever happened to you? What could be the cause of this?
woah, never seen that before. Overtemp in the printer? Could the humidity in the room have something to do with it? Probably a longshot. Could be a faulty seal. Might be the most possible cause. Keep us updated as this is quite interesting. Thx
I took a closer look at it and realized that there is no seal at that spot. It’s probably melted powder. The problem now is that the plate can’t be moved anymore.
Open up the chamber and see if you can get it loose. Should be be able to save the chamber.
Hi @KuemmeMl ,
Réka from Formlabs Support here. This looks like perimeter melting. Please see possible causes and troubleshooting steps in the article I linked. Just to be on the safe side, please also open a support case here with some pictures and your printer’s/BC’s serial name, my colleagues will be able to help you further.
Here’s a quick update on the Fuse 1:
After the material had melted, I gave the printer an especially thorough cleaning – and that’s saying something, since I’m usually very meticulous anyway. I then reset it to factory settings and installed the latest firmware. The next print completed without any issues.
Unfortunately, I haven’t yet had time to take apart and clean the build chamber.
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I have now disassembled and thoroughly cleaned the build chamber. The seal was completely covered with melted powder. Unfortunately, I forgot to take pictures. Removing the melted powder from the chamber walls was quite difficult.
In the meantime, I got in touch with David Simon from the support team, who analyzed the log files. According to him, the air heater had failed, which caused the heating lamps to ramp up their output. That’s why the powder only melted around the edges.
However, I find this explanation hard to follow, as I’ve already completed two more print runs since then without any issues.
I’ll continue to monitor the printer for now and will only decide whether to replace the air heater after that.
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I’ve had two perimeter melting. Initially thought it was something I had done like not vaccumed the build chamber felt properly. But as the powder melted everywhere. Currently trying to clean off the burnt powder and melted felt which is super tricky. Using heat gun scraper and scotchbrite.
I’ve ordered a new build plate. Unfortunately, I couldn’t find the felt separately. The melted material bonded too much with the felt, making it impossible to clean.
Yeah it is just one whole assembly. Formlabs think it is the fuse’s build chamber socket on printer that has caused it. I have 3 build chambers 2 are now unavailable due to waiting on spare parts. One of them is quite new now trying to get the burnt on plastic and felt off using heat gun, scotchbrite and scrapers. What did you use @KuemmeMl ?
My initial assumption was that the air heater was defective, so I ordered a replacement. However, on the support page, I read that the issue can also be caused by dirty contacts on the build chamber. After I blew them out with compressed air and vacuumed them, everything started working as usual. The air heater is now sitting in the cabinet waiting for its turn.
I cleaned my build chamber as thoroughly as possible using a screwdriver and a scraper, then sanded the remaining residue with sandpaper and Scotch-Brite. It takes some effort, but it works well.
Yes, I read that so I did what you did then few weeks later it did another chamber. we have 2 fuses 1 was down due to a broken heater rtd sensor. I replaced it then other printer went. Did you remove the melted plastic on lip of chamber between volcano seal? The aluminum is so soft it was left with gouges on lip where I was trying to free build chamber platform. I take it the felt seal still works.