We’ve seen acetone used to smooth out 3D printed objects before – either by dunking the parts in an acetone bath or brushing the solvent on – but these processes had mixed results.

Polypropylene packaging waste has been recycled into filaments for 3D printing as the Fraunhofer Institute for Manufacturing ...

Assemblies (spectrometers) can be secured as systems of parts using rubber bands secured from notches in the spectrometer body. Some examples will be shown below. In addition to these 3D-printed parts ...