Made a little more progress on reverse-engineering the bike pedal this evening. I'm getting close to the point where I'm going to need to round edges - not looking forward to finding out whether Geomagic is any good at fillets.
@moonshake I would if I could! (not that it would do much good without a 3D printer)
@gbrnt So you are doing for practice. How are you working on this? Do you use simple measurement tools like rulers etc. or do you have access to a 3D scanner and only do the cleanup in CAD? Or is it something it between?
@moonshake
I took an initial set of scans with a Geomagic Capture 3D scanner, and from there everything has been digital. So far I've been able to do it all in Geomagic Design X (which is designed to work with the scanner, both made by 3D Systems).
In the past I've used the approach of using calipers and stuff, but this way has the advantage of being able to easily measure the parts worn away. This has all been for my product design engineering course at uni.
@moonshake
If I need to do something similar one day at home, I think I could manage to use open source photogrammetry software and Meshlab to get an initial mesh. I'm not sure if FreeCAD can import meshes but if it can that would be the way to go.
The advantage of this proprietary software is that it has tools specifically for dealing with 3D scan data, such as for identifying and extracting geometry.
@gbrnt You wouldn't download minor replacement parts!