I’ve been trying to print with PP filament and I’m experiencing major problems with getting it to stick to the print bed. I have printed both with new PP filament and filament that I produced myself using a Filabot extruder from new PP pellets.
As you can see in this picture it is not only sticking that’s the problem but a combination with a lot of warping as well.
Have you tried slowing down the print speed of the base layers? You might also feed the extruder a bit more (like 150 - 180% on the first layers. I haven’t tried PP yet, but I think it’s similar to PET.
I’m not exactly sure about the following, but: Doesn’t PP have a fairly low melting temperature (similar to PLA)? If I remember correctly from the PP Wikipedia site, then it melts at 180C. Therefore I’d recommend trying to print it at 190-200c and see how that changes the final results. A higher printing temperature means, that the material has to cool down more and for each degree C, that it has to cool down it shrinks more. Therefore you might be able to reduce the warping by a bit. As I said I’m not sure about the printing temperature of PP and to test this out you should definitely print slowly. Lower temperatures cause the filament to be less “runny” aka more viscose, therefore the motor needs more force when extruding at normal speed. To do your motors a favor use slower speeds, which reduces the needed force on the filament in order to extrude properly. Cheers, Marius Breuer
Great! Thanks a lot Marius. Indeed according to Wikipedia the melting point is even as low as 130C to 171C so will try printing at slower and at a lower temperature.
