I'll update if I get more things to work.
I feel like the Ninjaflex would be great, since it's polyurethane, but maybe you just need direct drive extrusion for filament that soft.
Yes, Formfutura flex pla is overall quite good. The only issue is retraction. So if Ultimaker flex pla is a different supplier, then I would try that too.
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nick-foley 5
Thanks for doing this, looking forward to more results. I've been interested in making some flexible parts and have been wondering some of the same things.
Right now, I think I'm going to print negatives in PLA and cast positives in Silicone because I want a pretty low durometer and high level of detail. Might try some flex filaments if they work well though.
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