Quote Originally Posted by Hamster
Would be nice to see if they are anygood for precision parts like helicals.
Are you sure you need something custom? I mean - something more custom than what is readily available is going to cost more and might end up not being what you want. Would it be a lot different from say this:

http://www.edmundoptics.com/onlineca...productID=1967

Other compnaies of course make similar things.