See foam

My idea of filling the cavities on my armature with wadded-up plastic bags, then using duct tape to secure them was a failure. Not my first dumb idea and likely not my last.

My new strategy is to fill them with Loctite foam..the stuff used to seal cracks in walls and window frames. I have been advised by the fella at the hardware store to be very conservative with how much I spray into the cavity. Y'see, the foam expands... a lot! He said he once used it to seal a crack in a wall. He sprayed too much of it, it expanded and blew a BIG hole in the wall.

If it works, I'll post a photo. If it doesn't work... well.. on to my next bright idea.