Wow, it's been a while...
The picture below was my first cut at a Colossus Siege Mortar, very quick and dirty completed in the morning before a tournament. Kind of loosely based on the Morser Karl Gerat.
I built the main body of the mortar based on the paper-craft, the breach section and the barrel are plumbing fittings. I added a pair of recoil dampeners made from tubing and some bits from Sentinel kits. The mounts are just bits of plastic tubing and a plasticard plate as a base. The muzzle and breech are courtesy of the plumbing section of the local hardware store.
And here's the finished product, ready to rain death on the battlefield.
What's On Your Table: The Rusted Chaos Renegades
8 hours ago