Hi,
here is another DIY project. A copie-camshaft-machine much cheaper then a professional one. Such a machine is tested and it works.
Now it is possible to duplicate an exist cam or you can make pre-production cams for your engine.
On another DIY project you can built a valve train test bench. It is possible to analyze the valve train by a stroboscope.
Here is a photo of the DIY copie-camshaft-machine
Best regards
Bastler