Just in case you thought I had given up on designs for a woodworking router, here are a few more designs that never made it off the drawing board.
rack and pinion CNCRouterParts based setup with a reduction gearbox
To be honest, if I was going to use all of these items, I might as well use one of their designs as well.
This one is closer to their designs, but uses geared steppers instead of a belt driven reduction gearbox.
This one takes a slightly different approach and uses some of the ideas from one of my smaller designs with vgroove wheels and linear slides that I actually own.
The above design makes use of sections of rectangular steel and is inspired by MadVac CNC and based off a design that may have been by driftspin, but I can no longer find pictures of the actual machine I based it on.
The idea is that a level bed of steel based Moglice epoxy resin is created on the rectangular sections against which the linear rails are mounted. The whole assembly is bolted together using pads of resin to create level flat surfaces.
More recently I found RawCNC and particularly liked their 1.5 extended version, so drew up a version of this, first in Sketchup, and then in Fusion360.