The rear bumper brackets on my jetta were both rotted away. 

I was able to find a part number stamped in one of them, and it turns out they are still available new from the dealer!  $3.10 each:)

After cutting away the old rotted section, I had to make a patch panel.  Remember all those different pick radii on my hammers?  Well the Fairmount fit the original dimple the best.  I have found this is a pretty easy way to hand-form a bead in small parts.

Just as before - patch each layer, weld-thru primer, then weld on the next!

One side done and primered.

Note: start with a cleaner shell next time!