Check out the custom work this guy does.
http://www.audioshark.org/introduce-yourself-6/machining-matt-minnesota-761.html
https://www.google.com/search?q=kra...dAhUMNd8KHfcBAQ0QsAR6BAgFEAE&biw=1583&bih=880
http://www.audioshark.org/introduce-yourself-6/machining-matt-minnesota-761.html
https://www.google.com/search?q=kra...dAhUMNd8KHfcBAQ0QsAR6BAgFEAE&biw=1583&bih=880