probably as big as you'd want it...

All metal frame 500mm bed Delta 3D printer

This is a 1-Axis CNC Glass Grinder. It uses a hobby grinder to miter a precise angle on the edge of a piece of glass.

The Ronin OX is a dedicated fiber composite milling machine. I give a complete in-depth article on how to take a nearly stock OX build and easily turn it into something that can mill carbon fiber and G10 plate effectively and quickly.

The frame is made from all open builds parts, add the rubber feet and pads for the glass. The glass is clear 12" x 16" x 1/4" with a polished edge. A light basket slides on the countertop.