PLEASE don't shave your cat. I'm a master groomer, and here's my advice, (remember you asked!). 1) cats need their coat, and shaving changes the QUALITY of the hair. It gets nasty feeling. 2) cats embarrass easily, and I can assure you your cat will hide for 3 days after you do the deed. 3) your cat only needs a professional bath with a "deshed" process getting all the under coat (as much as possible) out. Trust me, most groomers will shave your cat just because you want it done. I've been in the business for 30 years +, and I know what I'm talking about! Also, here's this: cats have very thin skin, and it slices easily. You could cut your cat with clippers and not know it for some time. It won't bleed quickly, and cats don't usually let you know they've cut them by yowling (as a dog would "yip"). You could by "in" way over your head here. This being said, I know it's your cat, do your thing. If you JUST HAVE to do this, use a professional clipper, Oster or Andis (around $120) and NOT the "pet clipper" type sold at many retail stores. Use a #10 blade, and hold on tight. Cats don't like being touched with things that buzz, and it could be a wild ride. Keep H2O2 on hand for any cat scratches or bites, and have fun. Then when you're finished call a professional to smooth out the hack marks and pay another $50+ to have the job done. Happy clipping, see ya in the hospital!