Hardest filament?  

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mathias.b3
(@mathias-b3)
New Member

i am looking for a filament with the hardest surface finish. Any ideas? 

Best regards 

Posted : 10/06/2019 10:06 pm
RetireeJay
(@retireejay)
Reputable Member

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.

Posted : 10/06/2019 10:41 pm
Vojtěch
(@vojtech-3)
Honorable Member

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.

Posted : 10/06/2019 11:13 pm
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(@-2)
Illustrious Member

Voj: Which of the PEKK's have you printed with? And any photos of the final surface quality?

It is always wise to get more than one opinion... as for trusting Prusa? No way man....
Posted : 11/06/2019 1:02 am
jberk_1234
(@jberkson1)
Active Member

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

Posted : 17/07/2019 1:15 am
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