What tool too use for 3d scanning parts of wooden chair?
Has an rader old wooden chair, too which i would like to make new parts. some parts are complicadet with curves i all directions. So iam dreaming of an tool which could help me scanning these parts.
i am Useing AutoCad....
For autocad in 2d you can make use of a photo. prefferably with low perspective deformations. (use a tele lens with zoom, set apart the object as far from the camera)
Those photos can be inserted in autocad and trace around the curves in each view.
To make it 3d .. idk why you would consider Autocad for 3d, but in Catia/SW/Inventor and many others (maybe even autocad 3d), if you have the same curve seen from top and front and side can be combined into a 3d curve as intersection. Also there are other modelling tools.
As for scanning 3d, there are a lot of 3d scanners lately. I've used the Creaform Handyscan Black. It's neat and quick but be aware it's a 50k$ tool. And most 3d scanners start from 5k$ upward.
So the next best things are a photos in some directions from you can trace the curve, and some measurements with calipers in some critical areas that are easier to measure from the real object than from a photo.
Challenging project... but something furniture restoration guys do all the time. A model is useful, only in as much as creating a flat-pattern. Then comes the pattern-making, forming and all the fun stuff.
You could probably get a flat pattern, tracing pieces onto card stock, then building a template and routing it out. Then you would need to build another for forming. The critical pieces--as mentioned--you will need to accurately dimension and/or fit into your mortises.
Never tried anything like this... but I do have an affinity for Jens Risom, Noguchi and other builders of this era. Masterful works.
Photogrammetry is an affordable entry point for this kind of work. You won't get sub mm resolution (like a laser scanner), but you don't need it for furniture.
Based on the image, I don't see that any scanning technology is needed to duplicate the parts.
Laser scanning is easy, but editing the mesh data is very time consuming. It also does not magically make a CAD model. You get a 3D mesh, but then have to recreate it in CAD. Scanning is a great tool, but I'm not sure it will help a lot for this project.