6 cavity mold block dimensions

[oley55]

I'm about to cut out a lid for a Lee Pro 4/20 pot and want to make it large enough to ensure a 6 cavity mold block will have full contact across the lid.

What's the general length of a 6 cavity mold block?

[oley55]

never mind, a PIC is worth a thousand words.

https://www.opennrg.com/product/lee-4-20-furnace-pot-upgrade-kit/