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Is the material used in the part safe to ingest?

I'm an amateur at this part, but I've reason to believe it's fine.

The material is a Nylon plastic. "Polyamide PA 2200" according to ShapeWays. This link[1] has details on the material when used with laser sintering and in regard to contact with food. The key quote is "[...]are in compliance with EU Plastics Directive 2002/72/EC for the use with all types of foods except high alcoholic foodstuffs[...]"

That said, there is a porosity issue with 3D printed parts and consequently dry coffee coats the impeller and sticks to the surface right away. It's a big problem if in contact with dairy, meat, liquids, etc. because it harbors bacteria. For this reason, ShapeWays does not claim to be food-grade. I don't think it matters for dry coffee though. Nevertheless, there's a writeup about this on the storefront so customers can make the call if they care about stale coffee on their impeller or not.

[1] https://www.sculpteo.com/static/0.30.0-49/documents/material...

Was thinking the same. Looks like the original plastic part is destined to be slowly ground and consumed by the user, the printed one will have the same fate.

and what's the original part made from? that's what I'd want to compare.

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