I'm planning to someday make my own G-Lathe using the lost foam method of casting. I all so want to make it out of Brass rather than Aluminum. I wanted Brass cause it is heavier and harder. I was wondering what is the largest size (ie length between centers and length across bed) anyone has made. I also want to carve in some important info about feeds and speeds depending on materials. So any thoughts and or help will be very much appreciated. Thanks for looking and any help.