Low cost wood mill mostly made from hardware store, but with some machined aluminimum key parts.
Mixture of metal and wood to get the accuracy I needed
Use of delrin for zero backlash guides
Notice the simple guide rails, cheap roller bearings and aluminum angle iron
Standard threaded rods from hardware strore, rods are captured on ends with bearings.
The drivers used are our microstepPLD boards, I'm able to push close to 60ipm.