[FarmerSid]

Thanks Chevette. I have tons of old shelving unit shelves that I plan on using for my 52 rebuild. They measure 0.043" which is between 18 and 19 gauge. There are factory 90 degree bends on them that I cut off the perimeter so all I am left with is a flat sheet about 32"X20". I bought a shrinker stretcher and tried to shrink a piece of the 90 deg cut offs. It's almost like the metal I'm using is too thick for the shrinker. I'm afraid I'm going to break it with the amount of force I am applying. The metal is barely shrinking and I only inserted the metal about half way into the jaws.