If you’re in Europe, ColoFabb seems to be the best you can find.
I beginner with the Vellemann filament too but needed new colors and tried ColorFabb. You need to relearn everything and to change the settings but the result is far better.
It could be that the head is indeed a little bit too high. But if it’s to close it will permantly mark the buildtak sheet. It needs to be pretty close indeed, as with all surfaces. Good tip
4 layers of paper is the good height for me… Can’t figure what distance it is
Too high it won’t sticks well, to close the head destroys the print. But at the right distance with good temperature and slow speed, it’s for me perfect for PLA (didn’t try ABS for now).
Most of the time, i fold a piece of 80g paper in 2, and use that for height calibration. Most of the time some finetuning is necessary, sometimes I stop the print and adjust the setting screw on the back 1/8 - 1/4 of a turn, or I make the adjustments on the go with the setscrews on the bottom of the bed while the printer is still printing a skirt.
It’s been a while since I used buildtak, but was quite happy with it so i bought another one to replace the first. I tried to print ABS without a heated bed but the abs just doesn’t adhere good to the buildtak when its not heated. You can also use the sticker with a heated bed, but one time i tried to loosen a piece which was quite high and had a small base at the bottom. No issues there as the print was fine but when i tried get the piece of the bed, a bit of the sticker broke off and was stuck on the print. The sticker had seen some abuse at the spot that broke though,.
My personal conclusion: It’s great but its not ‘the’ adhesion solution as it is advertised. But you can do nice things with the glass without the sticker on it.
I have added a plexi front door and roof to my Vertex, it protects mechanical part from dust.
I’m looking for filament dust protection to be placed directly on the printer, I can’t found it on Thingiverse so I’m thinking in design it by my own… and share it of course!