Hi all! Question: Out of all the raw materials that can possibly be used

3D Printing
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1

Hi all!
Question: Out of all the raw materials that can possibly be used in a 3D Printer, are any of them water soluble? As in, they will dissolve in water?

2

PVA is the only one i know of - Lulzbot carries small spools of the stuff.

3

If you’re not limited in scope to just filament-based 3D printers, molten sugar is an option.

4

I’ve also seen salt used. I believe it was a powder/binder process, but it might have been SLS.

5

There have been extruder based prints using porcelain clay and chocolate, so cold porcelain clay, which is water soluble, might be printable as well. I wasn’t able to find anything on the solubility of porcelain clay, nor whether porcelain clay and cold porcelain clay are related.

HIPS (High Impact Polystyrene) has also been used:

Basically, PVA is temperature compatible with PLA, and HIPS is temp compatible with ABS.