CNC Router : Z Axis and Router
Z Axis Construction
To keep the Z Axis nice and compact I decided to buy the linear rails and bearing blocks rather than make them, I picked some super cheap ones of ebay which work just fine, but next time I will spend a little more as these keep popping ball bearings and run a bit rough which adds strain to my motor. The Z axis is the most simple axis which is probably why I have had no problems with it so far, you can see the construction in the photos below, I included the cad model because I got a bit carried away with it and figured I may as well use it.
For my machine I stole my Dad's Ryobi router he left laying about in the shed, these hand held routers (sometimes called laminate cutters) are very easy to mount using the attached depth slider which I just bolted to my Z axis, this also allows easy removal/replacement to change the router bits. The main problems with these cheap routers is that they are hellishly loud and are not really designed to run for hours at a time, when this one dies or I start getting complaints from the neighbors I will replace it with something a bit quieter.