>>6200494They're just heavy enough to topple over if you hit them from the front, since they sit on the back of the 4x6 plate, but not really that heavy quite frankly.
On another topic, here's what I'm working on, I think some of you may reckognize it. It's not finished at all and I hope to get it done before the end of march, since I'll try to bring it to an exhibit and show it off with my other builds.