This is likely to be the last of the big weapons for a while. I am running out of scrap to make them with!
This was simply an exercise to try and build a non-functional (but rotating) minigun prop for a stills shoot. It basically uses up all my remaining odds and ends of PVC pipe.
The methods and materials I have used are simply because that is what I had in the workshop. I didn't want to spend any money on this project if possible.
YouTube video of the gun spinning can be found
Step 1: The barrels
Without a doubt the defining feature of the minigun is the six barrel Gatling arrangement. I sourced as many images of the variants of minigun in existence as well as few imaginary ones. I also found some diagrams and drawings.
The main components of my barrels are lengths of PVC tubing used for plumbing and cable trunking. Unfortunately none of them were long enough individually to match the correct barrels so there are 6 lengths of 20mm tubing, and then 6 lengths of 15mm tubing to form the barrels. The central shaft is made from a length of 25mm conduit.
I began by cutting and cleaning up the pipes. I laid out the cleaned up sections and checked they were all the same length.
Next comes the barrel spacers. I used two card templates and carefully drew and marked up the spacers. These were then cut out and I looked around for two plastic tubs of similar diameter. I poured resin into the tubs to a depth of about 1/4" or 6mm and left them to cure.
Step 2: Spacer assemblies
Once I had the two cured resin 'pucks' I glued the templates to them, gave them a coat of resin to protect them, then carefully drilled out the holes and cleaned them up.
These two spacers then formed the masters to cast the rest. I needed three of the smaller and three of the larger sizes to complete the barrels.