I'm planning on building a diy cnc router for use primarily on wood and have made a cad design. I would appreciate any suggestions on how I could improve the design or any considerations that I might not have thought about. The constraints to keep in mind is I am intending this to be a fairly cheap build, and I already have some components (round 500 and 200mm rails, and leadscrews, nema 17 motors, scs8uu slide bushings, pc power supply, arduino + ramps, etc.) so upgrading to better parts like ballscrews and large solid aluminum plates isn't in my price range right now.
Most of the machine will use aluminum extrusions 30x60, and 30x30, with 6.35mm 6061 aluminum plates as well. I'm also considering mounting the whole thing on a concrete base to reduce vibrations and make it more solid. In the cad design I have a dremel in a 3d printed mount, I will change to a more powerful spindle later, but I intended to first test it using a dremel 300 that I have.
The Y-Axis gantry, Z-axis, and dremel combined will weigh 13lbs. The whole machine will weigh about 28 lbs.
Full machine:
Side view:
Z-Axis:
Y-Axis Gantry:
Base/X-Axis:
Thanks!