It's amazing to me what can be done with these printers. I believe my niece's boyfriend studied CAD design but not sure if he's putting that to use here.I dunno about master, but yeah we 3D print quite a bit. I've personally done some golf stuff, Driver heads, Putter heads, etc. I love being able to draw something, then push play and a couple hours later.
Depends on the materials, the more common polymers (ABS/PLA/Nylon)..great for kids clubs hitting wiffle balls, but not much else. 3D printed metals, like the Cobra putter...at least as strong as a machined billet. In fact depending on the use, it can be stronger, lighter and more cost effective than a solid piece of material.
Yes, he would have to have used a CAD program of some sort unless, there is already a file someone else has drawn that can be downloaded from a repository.
