How to Make a Domino Knocker Just Like in TeacherOfTheWays' S Rube Goldberg Machine

i just recently found meh k'nex .i saw TeacherOfTheWays' s Goldberg machine. i liked the domino things in the middle of the path. i call them domino knockers. hope u enjoy them!!

the dog is so i can have a advitar, sorry :|

Step 1: Um Look at the Picture......

the k'nex elements are in the picture. spread them out exactly like that.there is 2 pictures because i missed a part.

Step 2: 0k the Video Is a Little Fas,but Try to Follow Along

I AM AWARE THAT THE VIDEO IS GONE! IM TALKING TO YOUTUBE ABOUT IT :\

after you did, it should result as this:

Step 3: If U Want a 4 Armed Domino Knocker,follow These Steps.

you need the last domino knocker we made. this is a add on,if you don't want a 4 armed one, you can skip to the demonstration. heres a parts picture with the finished 4 arm project