Quote Originally Posted by CHudson View Post
Oh I forgot to mention that, for internal pockets I have allowed an acceptable radius of a 6mm end mill and tolorances of +/-1mm excluding drill holes where tolorances of +/-0.5mm required.
If these are front and back surely your tolerances must be a bit tighter than +/- 1mm if you want them to match up? 0.1mm more like it!