Good morning fellow Fusers.
Im wondering how you ppl deal with the laurolactam build up around the filters and inside the printer in the chamber cavity.
I see a huge build up after a few years of use. I regularly wipe off the laurolactam build up but that does not really remove all of it. Is a superfine sandpaper an option to try and grind it away?
What tricks do you have up your sleeve to deal with this?
Thx in advance.
Hello Andreas, do you have the Fuse1 or the Fuse1+? On our Fuse1, significantly more lauralactam forms compared to the 1+. We vacuum it up after every print job, and once a month I wipe it off with IPA. Residue always remains, but that shouldn’t be a problem.
We have both Fuse 1 and Fuse 1+ and the build up is indeed significantly more on the Fuse 1. I clean it with IPA after every print, still it builds up like crazy. Didn´t see kind of build up until maybe a year ago and we have had them for approx 3 years now. One printer has over 10k hours and that one looks absolutely aweful. Still works tho.
OK, that’s interesting. Could you send some pictures of what it looks like on your side? We actually have the impression that the Fuse1+ produces less laurolactam. We are printing Nylon12GF. A thin white layer forms on the wall inside the print chamber, which can be removed with a vacuum cleaner. However, we only have about 3,000 hours on the printer.
I will secure some pics tomorrow on the Fuse 1. The 1+ does no have the same build up.
Same here, we clean after every job but it sticks to the surfaces specially black ones. I wish there was some sort of solvent to remove it.
I use the brush attachment to brush/vacc off as much as possible. That’s interesting to learn the 1+ does not produce as much.
@Mario_Martinez Yeah the black surfaces seem to attract it more, im guessing its the surface material that makes it stick even harder.
@SMute I do that aswell but that does not even come close to removing it.
I think there is a solvent to remove it as we have recieved refurbished printers as replacements and they have a few good hours on them but the laurolactam is non-existent on them when we have recieved the printers. 5-10 prints later it was like night and day.
Im not asking them to provide any solvent, just that they tell us how they remove it.
I take great pride in keeping our machines spotless and in excellent condition and this bugs me to no end. I want to get rid of this laurolactam.
Our machines run basically 24/7 and we really put them to the test.
Any tips on moving forward with this is greatly appreciated and will get my utmost respect. 
Are you using a microfiber cloth with the IPA? Not sure if you’ve seen this video: Laurolactam Clean Fuse 1+_Thinglab.mp4 - YouTube. I haven’t had much luck with this method (I think my microfiber cloth was junk), but the demonstration makes it look effective.
I checked that video out now and those printers don´t have anywhere near the hours ours have.
Our printers has a thick layer of laurolactam wich does not come off using ipa and fiber cloth. Thank you for the tip tho. Much appreciated.
Photos are coming in a few minutes.
This is a fairly clean one. Yet it still is impossible to get rid of entirely. Hard to capture such a yellowish/cakeish finish on the door with a camera.
Yeah, my printer looks very similar. I know just what you’re talking about regarding the yellowish finish, and I’ve never been able to remove that last bit of residue either. I can’t imagine it causes any print issues, but I also would prefer keeping my printer spotless!
No it doesnt cause any issues other than cosmetic. But keeping them spotless is reeeeeeally difficult. 
