I recently had a friend ask me if I could help him repair some office chairs by replacing the entire back piece with a wooden one as there are some cracks progressively getting worse down the back of the support which you can see in the photo.
So when brainstorming ideas on how to actually go about this there were only really 3 things I could come up with that could work but they all had their own issues:
Making some sort of jig to then use a router - Would still require a lot of sanding and the jig wouldn't work all too well
Using either one of the rasp or plane blades for an angle grinder on a big blank - Would not really be easily replicable and also extremely easy to screw up the entire piece
CNC machine - CNCs are only recently really becoming super mainstream in woodworking so many people still do not have one
So after that it got me wondering how this could actually be done in a replicable way. Now I see that a CNC would be the easiest way to make this "organic" shaped piece and others like it but I can't be the only person without a CNC so was wondering what ways people make pieces such as without machines like CNCs