[duallyjams]

I followed PICKMUP ( Frank ) thread from 2008 on how to make your own front 4x4 hub caps. Mine are for a 68 big hub K20.
https://67-72chevytrucks.com/vboard/...d.php?t=293221

From my experience GM painted caps are metal ( magnet test ) the early chrome caps are brass and then went to stainless. Frank thread show stainless. I did the same process for chrome over brass hub caps.

credit goes to MP&C ( Robert ) as this was done at his shop.

1) used the spline hub off of the dana 44 big hub as a template for the opening. You see the outline in pic #2
2) board a small hole in the cap to provide access for the tin snips. You can see the brass shaving.
3) cut out using tin snips
4) de-burred the opening
5) made the fixture to roll the edge of the cap. Took 16ga and rolled around a pipe, used a hose clap to hold the ends together to weld it into a circle.
6) used a linear stretch hammer to roll the edge using the fixture. Slowly work around the opening only bending a little at a time.