A 100 pound bag of sand was used to sandblast the drivers door. A few areas were exposed that need welding, one of which is circled on the right side of the photo.
Here is a close-up.
Using a pointed burr grinder the rusted area was removed then the hole was trimmed as shown.
A sheet metal patch was cut and held in place with a magnet.
The sheet metal is too thin for a continuous weld so a series of tack welds were used instead.
Additional tack welds were added until the entire area was welded.
Using a thumb sized burr grinder the crowns of the tack welds were removed.
A sanding disc was used for final feathering of the repair.
Next I get to tackle this.
Wish me luck.
Post Script Picture:
Repairs were made followed by a coat of JB Weld to fill the nooks and crannies.