I've been trying to build a cnc machine for almost a year now, but my lack of knowledge seems to be holding me back. I've invested thousands sofa on parts but am literally no closer to cutting than the day i started research. i have tried many programs..sketchup, rhino, fusion, and mostly onshape. it seems like onshape is the most powerful program but despite their "easy to use" tutorial videos, doing what you want in the program seems considerably more difficult. it seems like i try to do the simplest thing, but get hung up on some little detail, get confused, waste an hour and end up so frustrated that i put the thing away and come back next week to more of the same. getting these complex assemblies together baffles me. i bought a bunch of 5010 extrusion, but am not able to get even close to designing the side plates necessary to assemble to the machine. it seems like a watch guys come on here all the time and they are immediately designing models and building machines. what am i missing?