not for teaching, other reason.

thanks for have accept my request on facebook  ;D

Do you like inventions? i like very much, from when i was a child, and I delight to do inventions in  mechanical.

I needed this simulation to see if my idea was valid or not.

it's valid!!!

thanks so much professor and if you need something in the previuos my post, as said my god, you only have to ask and you will be given ;D