Bad adhesion - faulty sheet?
Hi all! So by this point I have assembled 5 MK3S printers. The first one was my own and the later ones were for a university society and my employer. With my very first one, I had an issue with awful adhesion on the flat sheet, where PLA would not stick, no matter how much I'd clean the bed with IPA, and ultimately only worked with glue. This was however not repeated on any other printer I have made. Today I have attempted to use a different flat sheet on my original printer, and it worked flawlessly.
Not really a question as such but this leads me to believe that some sheets can be faulty with awful adhesion. Is this a known issue? Are there any other good solutions because obviously my one is a hack rather than a solution?
Yes, there's evidence that some sheets do stick better than others, but mostly this is reported with the textured sheets.
There's also some evidence that sheets work better after they are 'seasoned', as in used a bit, kind of like a cooking utensil.
One thing I might try is acetone, as that is said to somewhat 'refresh' the coating on the smooth sheets.
Here's my standard suggestion for bed adhesion issues:
Around here, the 91% isopropyl was hard to find in the early summer and is hard to find again.
However, I've been using the 99% 'technical' (translated: not for clinical use) grade isopropyl, which is comparatively easy to find.
What's known as denatured alcohol here in the States is also easy to find. It's ethanol with adulterants to make it unsuitable for drinking.