A few nice milling turning China images I found:
Riveting jig
Image by Jez B
The rivet set is removable – made of silver steel, hardened and tempered.
Riveting jig
Image by Jez B
Removable piece – allows the jig to be used with the (double tee) hind wheels
Riveting jig
Image by Jez B
Built to rivet the spokes to the rims on both front and hind wheels of my (work in progress) 1/4 scale traction engine using a hydraulic press exerting 4.8 tons of pressure to form steel 3/16" rivets For scale the mail column is 8.5" tall.