Aaron, I would say it depends. I am by no means an advanced woodworker, although I am a pretty good craftsman and a manufacturing engineer by profession. Kind of jack of all trades, master of none and have spent my career trying to figure how make things so this comes natural to me.
These are all machined "by hand" and not made using a duplicator. I use a router table for the inletting and forearm shaping. I use a trim router for the free hand work for inletting for the tank band clamp block and a aluminum plate I inlet into the butt for anchoring the tank clamp, but all of that could be done with chisels, which do get used a little for squaring up corners and fitting. All the organic shaping I do with carbide burrs, sanding disc, and small sanding cones on pneumatic die grinders. (straight and 90 degree) They are small but powerful and allow for a lot of dexterity for shaping. I have other tools that I use to reduce the amount of elbow grease needed, and for blank prep, but I think I could do it without them.