Pirate Cannon - A working replica of a naval cannon that fires pneumatically

Step 3 Load The Jig

I cut two circles of MDF the diameter of the two ends. I placed a piece of 1.5 inch schedule 40 pipe into the jig then slid on the large MDF circle. I held it in place with a screw.

I stacked the squares of foam onto the pipe until the length I requried was achieved. The smaller circle of MDF went on. Then I got some help to compress the material to mark the pipe and drill a small pilot hole. I'ts important to compress the material a bit to hold it in place. The foam will not be glued until after it is shaped.