Received my #11 cap maker from 22lrreloader about 2 weeks ago and have been busy destroying tin cans since then. My experience with this product is mixed, I achieve about a 40% success ratio when it comes to stamping out decent looking caps, most of my attempts results in mangled split caps that are unusable. I have used various types of soda/beer cans with the same results as well as changing the way I hit the die ram, I have also tried paint side up and down with no affect. I have found that just smacking it with my hand on a solid surface gives the best results (about 4 out of 10). I tried contacting the manufacturer about the dismal cap making results and received no answer. I would normally rate this product pretty low, but in a climate where no caps can be found, this cap maker does produce some decent caps every so often, so I guess some caps are better than none, it just takes me longer to produce them and I use more FREE cans from the recycle bins. I will continue to experiment with different cans and metals to see if quality changes. If anyone has some tips or wants to share their experience, I would be interested in hearing.