Hardest filament?
i am looking for a filament with the hardest surface finish. Any ideas?
Best regards
RE: Hardest filament?
Nylon (e.g. Taulman 645) gives you parts that have an extremely tough surface. They are almost impossible to sand or file. But nylon is a little flexible, so it depends on what you are looking for. You also have to keep nylon dry before printing.
RE: Hardest filament?
If it's just about the surface, then stainless-steel filled PLA will be hard to scratch - the steel particles will protect the PLA to a degree. If you're looking for a super stiff filament, then filaments filled with carbon fiber will do, starting with nylon, then polycarbonate and if you have a really big wallet, then carbon-filled PEKK is the ultimate filament in most aspects, including hardness/stiffness.
RE: Hardest filament?
Voj: Which of the PEKK's have you printed with? And any photos of the final surface quality?
RE: Hardest filament?
Check out this paper, it is normally used for supports due to its chemical properties but depending on the loading scenario HIPS could be a good option. https://docs.lib.purdue.edu/cgi/viewcontent.cgi?article=1026&context=aseeil-insectionconference