100% PHA! It's better structurally than PLA in a lot of ways, it's fully biodegradable in any biome, and it's just got a really pleasant feel to it
I dusted off a sealed roll of polymaker natural ASA for my CR10 V2 pro, trying to print parts for my motorcycle and cars that were previously printed in PLA+. So far a few large parts have warped about 2/3rds of the way through. I purchased a PEI magnetic bed and am now using an enclosure. The benchy i printed looks perfect tho. If i can get it dialed in, i think it will be my favorite.
I love ASA for exterior fixes around the house. Durable, stable, but - as you've found - a bit finnicky about warping.
eSun PA-HT CF - nylon and CF in a 290C extrusion temp mix. My biggest problem is that I've never managed to get the support settings right so supports tend to be structurally bonded to the part and require a dremel to remove.
The other is the eSun PA-LW, which I haven't found a good use for yet because it's so @#$@#%$%@ oozy that it pretty much only produces a decent part when in spiral mode. Makes fantastically light parts though.
What is PA-LW like as far as hardness?
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