Ki Blast:
There are many types of Ki blasts, and many different names for those blasts. Any radical Ki student is familiar with the Kame Hame Ha or the Mensenko Ha, but this is neither of those. It is merely a blast that is done to train yourself to be ready for the instance when you might need it.
Abilities needed for this attack:
Ability to draw Ki
Ability to direct Ki
To start off, this is written for beginners, so bare with me those of you that know some of this already. I will now be instructing the strong, one time, hope you get 'em blast.
Relax. This is easier in loose, comfortable clothing, but you cannot always have that. Draw in all the Ki you possibly can [or just as much as you want to put into the blast]. Now, pump all that energy into your hands. Let it build up around in your wrists until there is just no more room. Now, using any extra energy you have, move this mass out towards your target at the best rate for such an attack. The bigger the blast, the more energy it will take to make it move faster.
Practice this until you can charge it up almost instantly. As you become more skilled in your own Ki, you will have more powerful blasts if you practice them.
Now, I will give the basic technique for the machine-gun style multiple blasts. Once more, this is written for beginner.
Abilities needed for multiple blasts:
Ability to quickly and accurately draw Ki
Ability to concentrate on more hen one blast at a time.
Once more, relax, and draw in all the energy you can. Split this energy into two mostly equal sections. Take this energy and pump a little bit of it into your palm until your blast reaches proper strength. Now, once you are sure the blast will hold together, use some of the extra energy to shoot it out of your pal against the target. As you begin to launch the first blast, you should be beginning the process in your other hand.
Learning to do this almost instantly will take a little time, maybe more, depending on how much you practice. The greater your power of each blast, the less blasts you can get out of one charge. Once you learn to charge Ki while expelling it, you will have almost unlimited blasts. Your only limits are when your body can no longer take such an action.