Nutcracker for rootstocks/breeding

I was wondering how nurseries and breeders deal with cracking pits/nuts/seeds with the least damage.

I’m talking about seeds of olives/cherry/jujube/macadamia…

My success rate has been so low, is there a machine made for this task?

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For small quantities I use a vice. Slowly tighten until the seed crach cracks.


That’s an excellent suggestion, I’ve always thought of it but I didn’t know the name of the tool :slight_smile: Thank you.