[Zeke]

Cookie or gasket cutter is exactly right. And spring steel is perfect. I thought is might be available already ground sharp for this specific purpose.

I have seen gaskets being made and this is how they did it. Funny, a guy actually made a good living from building dies and cutting high quality unique and obscure gaskets for anyone that needed enough to warrant a short run. The fellow couldn't keep up with the demand. Lost track of him a few years back or I'd stop by and ask him. Maybe they ground thier own from steel banding.

The next level is rotary cutting where the production is very high compared to press cutting. Wait 'till you see what I have to make. It's a novelty gag item and every time I look at it I crack up.