Picked up a 1"x7"x24" chunk of precision cast aluminum plate from the local metal recycle place for $25. Still has the protective plastic still attached. Going to use this to make the spindle router mount that is attached to the nsk z-axis.
Got the z-axis installed. The stepper doesn't seem to have a problem moving it at 300ipm. I haven't chosen a spindle yet. Undecided on what to purchase. Maybe a water cooled spindle/vfd but that is expensive. I have a couple of porter cable and Bosch wood routers I can temporary bolt on but I use them in my wood shop. Besides they are too loud to run constantly.
Another cut test, the cnc is running great. I just ordered a 2.2kw water cooled spindle and vfd. Can't wait to get it mounted and do some aluminum cutting. I have a bunch of projects that my two other mills are too small.
I finally got around to installing the 2.2kw water cooled spindle today. It's been sitting on the bench for a couple months. I installed the Mach3 vfd plugin and can start, stop and control the rpm speed. A USB to rs485 serial adapter is used to connect the PC to the vfd.
The spindle works so much better than the porter cable router I had temporary used. Very quiet and only gets about 78 degrees while running. There's a radioshack LCD temperature sensor taped to the spindle to monitor the heat. The 12volt water pump is a 1.3gph flojet purchased from Electronic Goldmine for about $15 on sale.
I still need to install home and limit switches.
Does anyone put some kind of additive to the water to keep it from going bad??? Bleach, chlorine????