Crazy Machines Fanpage Board

I have done anything and I can not finish this level, I am making the C4 expolde first and then the TNT, but the box can no go into the place where it should go.

Can somebody help me?? Thanks in advance

The solution of this level is not quite obvious

Hint: Do not let the C4 explode. Actually, do not let explode anything, think of another use for the C4 and the dynamite.