I had to post this, I bought a Kinetic Pecan Cracker to shell our harvest. It is set up in the shop, clamped to the welding table to keep it in place. I didn't like the rubber bands that came with it so I used the rubber bands I buy for Topworking trees. Works great. You load a pecan, slide the shield over it once in place, hold the anvil against the pecan forcing the aluminum energy transfer plunger against the hardwood Hammer. You just pull back the Hammer and let go. Crack!

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I just crack what I will shell at a sitting. With this tool I'm getting about 70-75% Halves. Just fantastic.

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You can see it explodes the hull right off the pecan kernels. I am using a nut cracker & pick for the tedious stuff but this is way easier picking than the old lever type nut cracker. It is made in Dothan, Al.