When you feel you really need a home router, you will have a Biesse Rover you can use to make the parts for your project. That's a real luxury!

The reason I posted the Mantis and not the one from buildyourcnc.com is that the Mantis is student-grade: simple, cheap as hell, small volume (not only working volume, but also external envelope) and easy to align by design. You could probably build it using only manual tools.