[Jim Huseby]

Hi Brent- I know you knew the answer because you've been working on these things for years, so I'm not scolding you and this answer is for all listening in, too. Re-checking, I just measured into into a clean, acid dipped, de-burred cut out segment of a '29 rear fender and even though it had had some surface rust (removed and smoothed), it measured .040" (19 ga.). I've been using nominal 18 ga. for decades to repair and metal finish A fenders because it's a little thicker than 19 and will dress down to 19 if ground or filed. I like full thickness with no evidence of repair on either side. A fender will measure 20ga. or less where it has been ground on or heavily rusted. I have repaired dozens or hundreds of them and I believe they were all 19 ga. But there were way more than 20,000 of them stamped, making the ones that I've had my hands on very few.