An artificer and craftsman (whoops: craftsdwarf) with a reputation for understanding and devising small intricate mechanisms. He brought all the dwarven skills of attention to fine detail and precision work with metals to the art of building clockwork mechanisms and spring-driven things of all kinds. To him, the Gonne was just another fine intricate mechanism that needed to have a high-tensile spring replaced, better use the right sort of stainless chromium steel here as it looks like it operates under high stress, hmm, this is an interesting device, some sort of means of repeated delivery of objects propelled by these re-chargeable combustion cylinders. So you clowns use this as some sort of automated slapstick? I could see uses for this and it shouldn't be so difficult to reproduce...