MP&C
Member
I think you 're going to need a shrinker/stretcher to get those shapes in your patches. Primarily the shrinker. Here's a sample of what I did with a kick shrinker in the shop....
To show a couple test samples, we'll use about a 4" long piece with 1" flanges. The result shown is after about 4 passes, with a close up to show the "finish" result.
Shown against a roll of tape to compare the radius size we've accomplished..
Here's a closer shot to show the stippling on the shrinker jaw....
.....and the shrinking sample....
This kick shrinker works much better than the hand operated shrinkers you see available, but one of the hand models should do the job for what you're working with, 18 / 19 gauge steel..
To show a couple test samples, we'll use about a 4" long piece with 1" flanges. The result shown is after about 4 passes, with a close up to show the "finish" result.
Shown against a roll of tape to compare the radius size we've accomplished..
Here's a closer shot to show the stippling on the shrinker jaw....
.....and the shrinking sample....
This kick shrinker works much better than the hand operated shrinkers you see available, but one of the hand models should do the job for what you're working with, 18 / 19 gauge steel..