Re: Rack n pinion or ball screw
I used 40mm x 80mm x 3mm Aluminium Box section for my gantry and that worked out OK in the end. All of my linear rails and gear racks are bolted on. And yes, I did drill and tap a lot of holes! For some of them I cheated and used laser cut parts so I just had to tap them. The gantry I was able to drill and tap on mylittle mill to keep it all square. For the table, I bought a magnetic tapping jig and hand tapped them all.
I have seen adhesive tape being used. I don't have any experience with that but if I was going to do this, I would look for a 3M ATG700 tape gun with the right adhesive tape.
https://www.getpacked.com.au/p/3m-ad...t/2-ATG-700-3M
Others might have other ideas as this would not be the most economical solution as it costs a bit to set up with.
Rod Webster
www.vehiclemods.net.au