What primer should I make for Painting stainless steel plates?

Scruff up your stainless steel. Use some fine sand paper (150 - 200 grit). Stainless steel has such a smooth finish that the paint has a hard time sticking to it. You need to rid the stainless steel of any grease, dirt, or other debris. Plain old soap and water won’t cut it here; you need to use a degreaser and specialized steel cleaner. Use any kind of primer that is rated for stainless steel. Primer has a special bonding agent that allows it to hold to most substances, but you still need to get a high quality stainless steel primer. This will give you the smoothest result.

Thanks for the info. Didn't know they made stainless steel primer. Will look for some. It's brand new, so I'm not worried about it being dirty.