On Saturday, September 13, 2014 4:14:40 AM UTC, wrote:
I have some material I need to test for psi. I need to impact it in a way consistently to show difference between materials resistance to psi pressure. The manufacturer I work with demonstrates this with a center hole punch. But I'm looking for something a little larger in impact area and that has some way to set the psi impact. Any ideas?

I do not understand what you mean by psi. But my thoughts on a hardness tester would be to use a fairly small ball from a ball bearing. The balls are consistent in size, quite hard, and cheap. Put the ball on the material being tested and drop a weight through a tube on it. The tube would make sure the weight hit the ball and would ensure the height of the drop was consistent. Then measure the diameter of the mark on the material using an optic scale.

Dan