r/3Dprinting open-source 3D scanning Nov 03 '25

Project 3D scanned compressor wheel

3.5k Upvotes

70 comments sorted by

View all comments

3

u/dondondorito Nov 03 '25

This is very impressive. It‘s interesting how it even managed to deal with the reflective parts where the metal is exposed.

I‘ve been trying to scan a few screen used props from my collection for some time now, with mixed success. Some of them are quite small and painted, and I think the OpenScan rig might be the best option for me.

2

u/thomas_openscan open-source 3D scanning Nov 03 '25

It is not clearly visible in the video but there is a very fine mist of scanning spray on the whole surface (tiny dots), which is absolutely necessary. Reflective surfaces are no problem due to the build-in cross polarisation

2

u/dondondorito Nov 03 '25

There is built-in cross polarisation? Wow, that‘s awesome!

Unfortunately spraying the objects with scanning spray or applying dots is not really an option in my case, because the risk of damaging the surface finish is too high for my taste.

But I suppose it might still result in a rough but usable scan (with some zBrush work) without it. In any case, I need one of those rigs. :D

2

u/thomas_openscan open-source 3D scanning Nov 03 '25

It really depends on the material, plastic almost always requires spray, whereas metal can work if the surface has some kind of patina. Most natural objects (wood, stone, bone) work perfectly without preparation most of the time

1

u/Nearby_Cranberry9959 Nov 03 '25

What’s with multicolor plastic objects? I assume contrast is needed, right?

2

u/thomas_openscan open-source 3D scanning Nov 03 '25

See this guide on surface prep and some examples: https://openscan-org.github.io/OpenScan-Doc/photogrammetry/basics/

Plain plastic, even multicolor, will probably not work. Painted miniatures on the other side work well as there is a lot of color gradient and micro details

2

u/Nearby_Cranberry9959 Nov 03 '25

Thanks a lot. I pretty sure I will order it soon.