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Don’t throw out those used coffee grounds—use them for 3D printing instead (arstechnica.com)

submitted 1 year ago by [email protected] to c/[email protected]

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[–] [email protected] 43 points 1 year ago* (last edited 1 year ago) (9 children)

The dried grounds were sifted with a standard kitchen strainer to remove large clumps and then mixed with xanthan gum and carboxymethyl cellulose powders, which serve a similar purpose to binders, stabilizers, and thickeners.

Yeah, so don't throw out those used coffee grounds, just mix them with the carboxymethyl cellulose powder you probably have in the cupboard, and the leftover xantham gum you have laying around.

Then make a custom syringe feeder for your 3d printer.

[–] [email protected] 15 points 1 year ago (7 children)

Both of those ingredients are cheap, and Xantham Gum in particular is used in gluten free baking recipes a lot.

[–] [email protected] 7 points 1 year ago (5 children)

its a thickener in sauces too, very handy and all natural despite the scary name