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points by regularfry 21 hours ago | 0 comments
"A tad messy" really undersells it. You need a solid process to manage the (sticky, carcinogenic, smelly) liquid resin both as an input and waste product, along with having to dispose of (carcinogenic, smelly, flammable) cleaning solvent.

The problem isn't so much the process of a successful print as how you deal with a failed one. At that point you've got a vat full of resin with some solid parts stuck to the bottom, so you need to filter and clean the damn thing which means taking it out of whatever containment you've got. And that step you can't use the usual solvent for because it damages the sheet. But you'll have ample time to figure all this out because you'll get loads of failed prints as you figure out how slicing and supporting for resin works: it's different to FDM, some knowledge carries over but not that much.

Focusing on the 10-30 minute curing process ignores the part prep step: SLA is much more reliant on supports than FDM in general, so there will be either rough surfaces hopefully out of sight, or (if it's not a model that orients well) scraping/sanding/filling. And you want to do support separation and get that as clean as possible before curing, while the resin is still a bit soft, but that means it's only partially cured and you need to be PPE'd up.

When I'm doing anything with my resin printer I don't even go into the room without a breathing filter, don't touch anything without gloves. It really is a very different experience to FDM.

[–] 0xb0565e486 19 hours ago
Thanks! Some details in there I didn’t hear before like dealing with failed prints.
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