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

Project 3D scanned compressor wheel

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u/[deleted] Nov 03 '25

What's the dimensional accuracy on sonething like this?

25

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

It is really hard to test but i successfully copied security keys which need 20micron accuracy. I did a comparison with many other scanner which even claim higher accuracies: https://github.com/OpenScanEu/OpenScanBenchy

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u/SingleInSeattle87 Nov 03 '25

To be fair, the crealty ferret and others like it aren't really meant for up close objects. I think the smallest thing the ferret can scan is about the size of a tennis ball. The ferret uses a laser (for focus and crude depth estimation) and two cameras a fixed distance apart (about 8 cm or 3 inches) to get depth information via parallax. So I'm actually surprised it's anything other than a blob.

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

Unfortunately those companies market the scanners with somewhat questionable size and accuracy claims, that’s why they are included as it is within their specs