I'm hoping to collect a large amount of walnuts this weekend from my farm and will be processing them the following week.
One method I have heard of to remove the hulls is to use a paint mixer on the end of a drill. Place walnuts in a bucket about 1/4 to 1/3 full and cover with water, mix with paint mixer. The hulls should float up pour off hulls and excess water then dry the walnuts.
I think this year I will crack by hand with a bench vice but I would love to have an assisted way of doing it like in this video.
If any one has suggestions for cracking the nuts in a large volume of quickly let me know.