Here are three very simple and very basic exercises using a makiwara to build short-power. Even though these are very basic exercises, this doesn't mean that experienced karateka can not benefit from them! Indeed, I can virtually guarantee that practitioners who have never tried these exercises can make substantial gains in sort-power relatively quickly by practicing these three methods daily.
this makiwara is made of red-oak, making it relatively stiff. despite
being relatively long (the pad height in the video is that of the
Sui-Machiwara (Shuri-Makiawara) which is significantly higher than the
Nafa-Machiwara (Naha-Makiwara). The Nafa-Machiwara
being much easier to use correctly, because the force is delivered
forward and -downwards-. Delivering force downwards in a punch is much
easier because it flows with gravity and it more or less guarantees
decent shoulder alignment.