Build it yourself....Priceless

[customcutter]

Finally got started on some of the machining of parts. I had to turn down a register/spigot for the ER40 collet holder to fit on to. This is the original backplate.

http://s672.photobucket.com/user/customc...g.html?o=5

here is what it looked like after I finished turning it down to size +.001" for shrink to fit.

http://s672.photobucket.com/user/customc...g.html?o=3

After heating the ER40 collet holder in the oven at 250* for :30 and putting the backplate in the refridgerator, I put the 2 halves together and let them come to room temperature while maintaining pressure by using the tailstock.

http://s672.photobucket.com/user/customc...g.html?o=4

After it cooled I pilot drilled from the front, because the collet holder is tapped. Then flipped it over and clearance drilled for the threads and caps and bolted it tight from the rear.

Runout is .0005" on a Weldon 1" milling cutter at the face of the ER40 coller holder.