Fill sheet metal holes without welder?

I have three 1/2" holes in the top of each rear wheelhouse from PO's crappy roll cage job. Permanently installing a new cage now and I need to patch those holes - a surprising amount of water got in and sat under the new roll cage bracket while it was on for its temporary tweaking period. I do not yet have access to a welder unless I take it to a body shop. Any good way to put a good permanent patch on these holes without a welder? Thanks.

 

Grind the back side down to bare metal, glue a penny (or other metal scrap) onto the back with JB Weld. Fill the hole with JB Weld and grind smooth.

 

That is a great idea on how to patch a hole. As long as you own the money, did not steal it,

 

Trucks! on the Spike Power Block used an epoxy on one of their projects to install patch panels. Supposedly as good as welding. You could glue a patch on and fill with bondo. The Power Block site keeps track of products showcased on the shows so you should be able to look it up.

 

Or look here. I filled bigger hole than that with good results. Message #2

http://www.earlycj5.com/forums/showthread.php?t=57384

 

Fiberglass is always an option.

 

Make sure that you have a very clean surface to start with, and you should be ok