Switched brand of Polypropylene filament (Yousa -> Sunlu) and went from can’t remove to can’t stick.
Setup:
· Bambu X1C and X2D
· Engineering plate + Magigoo PP (letting tack before printing)
· Custom brims with large radius anchor pads modelled into the part
My boss wanted some fixtures made out of PP, he was using the sticky tape method to not much success. He asked me to have a crack at it, I’m a manufacturing engineer but I’ve never messed around with 3D printing before. I put together the setup above and was having pretty good success, adhesion was strong enough that it would sooner tear the brim than pull the brim off the build plate.
Quality between Yousa rolls was all over the place, so when we ran out, we decided to get some Sunlu PP. However, with the same setup it doesn’t seem I have the same chemical bond with my PP goo that I did before. You can just slide the part off plate.
What I’ve noticed / tried
· Sunlu recommended bed temp is 50-60 vs Yousa at 80-90, which makes me think it’s a different formulation.
· I’ve tried recommended and 80c build plate with the same result.
· I slowed right down to 30-60mm/s with the same result.
· Interestingly the Sunlu definitely curls in a less severe way than the Yousa but adhesion is so much worse it’s irrelevant.
Questions
· Does anyone know anything about the blend of these filaments? Perhaps one is homopolymer, the other co and this has some effect?
· Does magigoo pp not play well with certain pp formulations?
· Does anyone have experience / advice for working with Sunlu PP?
