Cnc od grinder and thread grinder

Hi, I'm working on an arduino based cnc grinder and thread grinder. This is for a very specific part iI and so the parameters are pretty narrow. I will have to be able to grind3.6 inches and an od of under 1 1/4 inches. All the thread grinding will be 40 tpi, and the material will be 45 rc. It should be fun and iI be probably have a ton of questions.

To date a have the steppers (nema 32 -840 in oz) stepper drivers and power supply. My aurdino will be in tomorrow for bench. All the linear movement items will be next week. I will post pics as it gets going. Just wanted to say high and introduce my self.