Just ran into this posting on Black Walnuts, Foraging for Black Walnuts has been my favourite Fall pastime over the last 70 years inspired by my father who couldn't stand to see all this lovely food going to waste. We would travel up and down the road collecting bags of the nuts, bring them home and have a stomping party in the barn on those lovely Fall evenings. We devised many alternative methods of de-hulling the nuts some very novel, but I have found stomping in rubber boots the best method other that getting the ones along the road already husked by passing cars.
I have used that Hammer and stump method of cracking the nuts but the best I have found is a commercial tool
https://www.grimonut.com/index.php?p=Products&category=nut-crackers
The Duke Black Walnut cracker. This one is from a nut grower in Ontario Canada and I.m sure it is available other places.
John
