Robot??

So we've been doing box modeling again, but a bit more advanced. We were told to design a robot, which is harder than it looks.The things I had most trouble with was welding and attaching objects to eachother, as well as getting obects close enough to actually attach them.

I have mastered extruding and variable other functions using with editable mesh. Now i know the "robot" above does not actually look like a robot but give it some time, I did rush to finish it, but it should be completed sooner or later.