Dots Ice Cream Mold - Diy Dippin Dots without Liquid Nitrogen

I love Dippin Dots ice cream but I can’t bring myself to pay $12 a pint for milk and sugar. I’d like to make them myself but I don’t usually have liquid nitrogen sitting around my house. Since I work with foundry equipment all day it wasn’t long before I asked myself ‘why not mold the ice cream’?

Unfortunately I haven’t yet gotten the dots out whole because I only have ABS right now. (The picture I took makes it looks worse that it is, it could be improved with a bit of tinkering.) I've tr