just i quick idea i had that i thought could help with strong connection points, mainly for leg bots or cons. the idea is attach a bolt of some kind to one bot and a nut to the other, the whole idea being that the bots screw on for a strong connection. I was thinking, especially the nuts, could be made quite discreet by embedding them so there is only a small hole. the more creative of you out there would no if this is viable. was just a thought that i'd thought i'd share.