Walker Wopper Jaw Slip Jacket Steel sand casting flask form foundry mold 12 x 12

Description

Walker Wopper Jaw Slip Jackets
Foundry / Metal Casting Molding Jackets -
Used -
Manufactured by Walker
Originally used for Bronze & Aluminum sand casting foundry work.
These are used to hold sand casting molds together when pouring metal into the molds.
The wopper jaws taper.
It measures at the large end 12 x 12
It measures at the smaller end 11 x 11
The outer edges are 14 x 14 and 13 x 13
We got these from a local college who had discontinued their casting classes.
not really made for jewelry it is too big.