3D Printers imported from China - avoiding asbestos exposure
How to avoid asbestos exposure with a high degree of certitude?


If you're not willing to do asbestos testing yourself and can't trust your suppliers either, then this is impossible.

That said, for most of the components on a 3D printer it is easy to verify they're asbestos-free (I've never seen a steel linear shaft containing asbestos). For the remaining components, you may be able to pick an alternative which you know to be safe, for instance an all-metal hotend without insulating tape, or a heated bed that's plain FR4 without insulation. If there are any components that you distrust specifically (such as a heater cartridge) you should source that from a trusted supplier.