David, If you mean actually shaping the 3D blocks so you don't have to sand, It can be done, but it takes too long during the cut process to be cost effective. It takes a lot of small width passes to turn out good 3D objects. What you can do in a few minutes takes it hours, but the results are perfect.
I've got a couple canopies in 3D i'd like to cut from maple to make plugs. Need to find a time to tie up the router for a full day and then some doing them.
If you mean 3D as flat pieces counting the thickness of the wood as the 3D,the software doesn't care, it just uses the 2D 'top' view of the part. During theCAMproces you tell it how thick the material is,so it knows how deep to cut while going around the part, offset bt the bit radius..
I'm pretty open on which planes to do. You guys control what I make much more than Ido
For the balistic guys, Iwant to do a .10 size TroubleMaker, but maybe not with the Ace wings. Hold on to your hat...
Don
Back to more cutting....