PHA is pretty nice
Nov. 26th, 2022 01:52 am![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
solarbirdMore photos on Mastodon, but here's a teaser:
Totoro model, facing forward, still on the print bed
This is that 20% wood-infill PHA I've talked about before, and the big point of this testing was to see whether the spanning issues would create problems on top and bottom layers, and whether I could prevent them entirely. Printed with a 0.6mm nozzle (smallest usable for wood infill), 0.15mm layer height on a 0.20mm base layer, 180°/60°C.
Top layers: complete success. Couldn't ask for more. 20% infill and three skin layers meant perfect tops.
Bottoms: Intact, but while small supported areas are generally fine, large flat supported areas are visually poor. I've seen worse with regular PLA, but it's below spec. And that means 20% support isn't adequate on large areas needing support, which tells me the three skin layers on the top are in fact meaningful.
Supported bottom layers often have issues, but I'll have to see how high I have to ramp support density to get away from bad behaviours.
The unexpected good: Supports fell away beautifully, leaving very little direct indication they were ever there. General layering is shockingly good; this thing is really, really smooth. But most of all, the (required) seam is mystifyingly good, as in, where the fuck is it because I know where I put it and I can't fucking find it. Which is just batshit insane.
I really didn't expect this to come out this well. I wanted a model to use as a base on which to try various treatments - stains and the like, and also sanding. I'll still use it for that but... goddamn. This thing looks nice.
Totoro model, facing forward, still on the print bed
This is that 20% wood-infill PHA I've talked about before, and the big point of this testing was to see whether the spanning issues would create problems on top and bottom layers, and whether I could prevent them entirely. Printed with a 0.6mm nozzle (smallest usable for wood infill), 0.15mm layer height on a 0.20mm base layer, 180°/60°C.
Top layers: complete success. Couldn't ask for more. 20% infill and three skin layers meant perfect tops.
Bottoms: Intact, but while small supported areas are generally fine, large flat supported areas are visually poor. I've seen worse with regular PLA, but it's below spec. And that means 20% support isn't adequate on large areas needing support, which tells me the three skin layers on the top are in fact meaningful.
Supported bottom layers often have issues, but I'll have to see how high I have to ramp support density to get away from bad behaviours.
The unexpected good: Supports fell away beautifully, leaving very little direct indication they were ever there. General layering is shockingly good; this thing is really, really smooth. But most of all, the (required) seam is mystifyingly good, as in, where the fuck is it because I know where I put it and I can't fucking find it. Which is just batshit insane.
I really didn't expect this to come out this well. I wanted a model to use as a base on which to try various treatments - stains and the like, and also sanding. I'll still use it for that but... goddamn. This thing looks nice.
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Date: 2022-11-26 02:11 pm (UTC)It's a troll! :-)
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