What happens next?

How to karate chop
Place the wood (or brick) on two stable chopping blocks, with the wood grain running in the same direction as the way your hand is facing to chop.
Chopping with the grain makes the wood easier to break.
Choose thin, smooth board for chopping, such as slim pine boards.
Don't try to chop anything that is too thick or hard (3 " maximum is suggested to start). A cinder block may be possible if you have been training for a few weeks and yell very loudly when making contact.