yeah, we get this a lot.

Unless you have a local print bureau who also do a scanning service - then scanning is NOT the way to go.

It's actually much quicker and easier to measure the existing part - digital calipers are your best friend - and design the new one from scratch.
I use openscad, which is excellent for this kind of thing.

If you want any kind of accuracy and something that can detect voids then you're not goign to get any change from $3000 for a desktop scanner.

The best current alternative is an app that works with the new iphones - and this is absolutely the ONLY circumstance where I will recommend anyone ever buy any apple product EVER !
https://3dprintboard.com/showthread....D-Scanning-app