What Size Drill and Tap To Use?

[ml_woy]

(01-02-2013, 09:15 PM)PixMan Wrote: Just what is the designation of the insert? Is it a countersunk hole?

To have the insert fastened secrurely and prevent any movement, you need to carefully put the hole in the right place relative to the hole in the insert so that the screw pulls it snugly up against the pocket shoulder. If you give me the insert nomenclature I can give you all the information you need to make it a good holder.

The insert I am using is a TNMG-321
I.C. 3/8"
Thickness 1/8"
Radius: 1/64"

The top of my tool holder is 3/4" x 1.06" and I was planning on mounting two inserts back to back with a .125" wall in the center separating them. In that way I could use the tool to do inside and outside radius's.

Another forum member recommended the use of this fastener http://www.use-enco.com/CGI/INSRIT?PMAKA=250-1299