In order to keep the weight to a minimum, the gun had to be kept reasonably small. The gun itself was made from 7mm and 22mm brass tubing, some parts from a brass light bulb holder, a brass button, a small section of brass binoculars and various smaller components, including some good old Meccano!
Firstly, the spike from the helmet was removed to the required height to allow secure fitting of the gun itself. The barrel section was constructed by soldering 7 sections of 7mm brass tube (salvaged from plunger rods of old fire extinguishers) into a brass Meccano belt drive wheel. Once these were in place, the muzzle ring (from a brass light bulb holder) was soldered in-place. Te domed section of the light bulb holder was then soldered to this sub-assembly. The swivel bracket is made from 7mm x 2mm brass bar folded into a U shape, drilled and fixed into place with brass rivets and solder. A Meccano contrate gear wheel was used as a foot for the gun as it exactly fitted into the binocular lens section on the helmet finial.
The simple parts were completed first on the helmet. Holes were punched and decorative rivets positioned along the brass peak edging and sheet brass plates were cut to size for the neck portion of the helmet and punched ready for attaching rivets. The binocular lens section was soldered into place atop the cut-down spike finial.
Two sections of 7mm diameter brass tubing were formed to the required shape. Hexagonal candlestick bases were then soldered into place onto the plates and drilled to 7mm to accept the brass tubing. This was quite a tricky process involving many clamps to hold the connectors to the plate whilst holding the brass tube in the correct angle whilst soldering it all up! Once assembled, the parts were then riveted to the neck guard section of the helmet and the uppermost ends of the pipe work soldered into the holes of the helmet finial.