I’ve read several articles here in the forum and I’m leaning towards a complete metal frame using either Uni-Strut or T-Slotted extruded aluminum. I’ve seen several articles on the former but next to nothing on the latter. Anyone try experimenting with this? I’ve built several industrial machine frames using nothing but this material. Nice part about it is all connectors and accessories including monitor mounts and castors. A bit more expensive but very modular.
I’ve read about some of the issues how chain sag affects accuracy. Would a timing belt help? They make cut-to-length for used for motion applications.