I not only want to make the inserts, just one sided for better support, but also was thinking of adding the "knife edge" to a steel Uniforce style shell. I make over 12,000 1/4" x 1" x 6.25" bars a year and have been using vaccum to hold the parts when making them from large plates. A while ago I figured I should be able to decrease the cycle time by 35% if I start with near net size parts, and way less chips to deal with, so 1000 lbs of the new extrusion should be here on the 20th. All surfaces are machined and all I have to hold onto the part for op1 is .045", which will get removed with a .047" radius on op2. I have a few ideas on how to do this and just wanted to know how much I could talk about this when asking for advice.