What is the best way to fill in those holes left behind when the trim is removed?

[Evian]

Hi guys
My Bronco is missing all of its trim. I don't want to replace it. I just want to fill in the holes left behind due to its removal. I don't like bondo because it tends to crack within a year or two. Besides welding over each hole what would you recommend? Someone told me to use boiler repair epoxy to fill in those holes. I never used it before. I have heard that it is excellent for repairing boiler leaks but would it work to plug up the holes? Any ideas?

 

[thegreatjustino]

Welding it shut and grinding it smooth is the RIGHT way to do it. There are a lot of other cheap fixes, but do it right and do it once is the best way to go.

 

[Madgyver]

weld them shut.

 

[Explorer]

And if you place a flat piece of copper behind the hole it makes welding a whole lot easier.