5. Remove the wax with a microfibre rag and rub till your arm gets sore lol
Your arm should not be sore. If it is, you're applying too much product and that's why it's taking so much effort to remove. It's also possible that you are using an inferior towel to remove the product.
Oh and polishing and buffing are two entirely different things
Buffing is done at high rpms and its purpose is to grind into the clear to take out scratches, fading etc.
And polishing is done with an orbital polisher which spins much slower and is used to remove wax. A polisher is ideal but definatley not necessary to get good results.
Polishing by definition is the process of restoring a surface or removing defect from that surface. If you are using a true polish, you are polishing the paint. It doesn't matter if you're working with a rotary, an orbital, or by hand. Orbitals can grind into the clear perfectly well too. You can't remove scratches/swirls without removing clear...you can only hide them. Same with oxidation--you can remove oxidation (faded paint) with an orbital or by hand.
Example of oxidation removed by orbital polisher (single stage 2000 Protege):
After pics seen here:
http://www.mazdas247.com/forum/showthread.php?t=123638190&highlight=quick+job+2000