I looked into it, but it covers a different use case. It’s based on photogrammetry. For reverse engineering, you always need at least one measurement to scale the mesh. Also, you cannot scan anything bigger than the enclosed space within the scanner.

The einstar actually measures depth, so I can get measurements even if I scan the object from just one side. It stitches the measured points together by overlapping features, so it theoretically can scan infinitely large objects.

A big reason why I wanted an All-in-one 3D scanner was because I want to reverse engineer objects I see “in the wild” and in museums. The staff there might not appreciate it when I put a ruler on their stuff.

https://www.floppydisk.com/

There seems to be still plenty of refurbs and “new old stock” on the market.

Extrudr provides .json files for most of their filaments, that can be loaded directly into Orca Slicer.

If you’re european and ask yourself why 3D printed guns are such an issue in the US: It’s not because entire guns are easy to print (or printable at all), It’s because of their idiotic gun laws: in the US, the only controlled part is the receiver or frame, which often enough is made of plastic anyway, while the most important part -the barrel- is freely obtainable.

[…]frames or receivers of firearms are “firearms” as defined in the law and are subject to the same controls as complete firearms."

Germany has a similar law, except that every part of the gun is controlled.

This is a 3D Printing sub. We print with 215°C molten plastic. Putting the printer into an enclosure is usually enough to heat itself, even in subzero conditions.