Tandy claims copper rivets are the strongest rivet known to man. Seems dubious to me. But maybe they hold better than rapid rivets.
Rivets on jeans could be a thing of the past
50 Sets Copper Rivets and Burrs, Copper Rivets for
How to Set Copper Rivets By Hand
High Quality Copper Rivets & Burrs Rivets 9mm/12mm Leather DIY
First time using copper rivets : r/Leathercraft
50 Sets Copper Rivets and Burrs, Copper Rivets for
How To Rivet Leather - Leathersmith Designs Inc.
[DOUBLE LUCKY AND ENJOYMENT! 77 Set Solid Copper Rivets and Burrs for Leather] Totally 77 leather rivets and burrs set: 47 Sets of copper rivets and
JUNESunShine 154Pcs Copper Rivets for Leather, 9 Smooth Leather Rivets Without Pattern, Pure Copper Rivets and Burrs for Leather Work Jeans Jacket
Rivets vs. Stitches for corners, load-bearing applications, etc
Weaver Leather Supply #14 Solid Copper Rivets with Burrs
Copper Cookware Rivets
JUNESunShine 84Pcs, Copper Rivets and Burrs, 9 and #12 Burrs Setter, Leather Rivets Fastener Install Setting Tool with 4mm Leather Hole Punch Cutter
All about rivets – Vintage French Copper
How Strong Are Rivets?
Are Copper Rivets Really Stronger? - How Do I Do That