This box contains metal cylinders open at both ends used by me
for containing investment around lost wax models for aluminum/brass/bronze casting http://mikegigi.com/castgobl.htm#HDFTGOB . Cut mostly from 3-4" electrical conduit about 1/16” wall. I used aluminum duct tape to seal the bottom - removed before heating to remove the wax. http://mikegigi.com/castgobl.htm#HDFTGOB The white item in the middle is PVC pipe with 1/16” screen glued to the bottom for straining out lumps. Pickup in Lakewood area as I don’t get to DMS