Anyone know of a source for die cut 16 or 18 gauge round steel plugs? I want to patch some extra holes in an old cars firewall and wonder if anyone makes 3/4 or inch diameter plugs that are ready to weld in. I can make them, but in the interest of saving time I'm just wondering if anyone makes such a product.
Thank you

Jeff

I have been using the knockouts from power boxes and j boxes for years, talk to an eletrician ...they thow them away in piles

or just go to home depot and buy a power boxl..... a 4" sq box will give you 8 3/4 and 4 1" plugs cost is around 4 bucks