Holes in copper sheet - senior moment

[Cushing H.]

Good enough next time as last piece on bottom use some stainless spacer and they will come even better

Nothing a hammer and vise flat did not easily fix

 

[Natlek]

Nothing a hammer and vise flat did not easily fix

Yes , easy to fix .But to get that result you can simple use Hollow Punch Set and done that in a few seconds...............Now you know why I suggested hard surface under

 

[Stacy E. Apelt - Bladesmith]

I use a punch and die set for that type work. Mine aren't the same as this one, but they all work about the same. You can punch soft metals up to about 14 gauge.
https://www.ebay.com/itm/Punch-and-Die-Set-9-Pc/303874228666?hash=item46c050c1ba:g:yfYAAOSwjsBff5iP

 

[Cushing H.]

Thanks natlek and Stacy. I’ll keep that in mind, especially for rubberized spacer material. The sets certainly are inexpensive enough