I would soak the hinges and pins in Evaporust to get the pin out. You could make a trough just big enough to submerge the hinge part in and line it with visqueen to hold the Evaporust so you don't have to buy gallons and gallons of it. Evaporust will also strip paint, so that's a bonus. The attached photo is a sample of what Evaporust can do - this was the defrost wye on my heater.
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Last edited by klhansen; 06/17/2024 6:57 AM. Reason: added a photo

Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.