How do you fill in holes?

[evil_twin]

I've got some small holes in my roof, trying to fill them in. Can anyone give me advice on how to do it, what materials I should use?

Thanks.

[Dj Buttchug]

ghetto way= use bondo

right way= remove surrounding paint and carefully weld shut while controlling heat to prevent the metal from warping

[evil_twin]

Hmm... well I want to do it somewhat correct, but I don't have a welder. There are a lot of holes, and I was thinking that welding might end up just warping the roof.

[Jand3rson]

Welding is going to be the only way to properly fix those. I imagine a just a little bit in each one will take care of it, by someone who is competent in welding.

[evil_twin]

I can weld, just haven't actually welded body panels though.

[AndrewBird]

It just takes a tack weld at a time with cooling in between. Basically you don't want to heat any more then just the tack weld.

[evil_twin]

Alright, I welded the holes. And I also welded in a plate for the antenna. There is a slight drop since the 2 surfaces aren't leveled. How would I go about filling that? I know I'm not supposed to just slap bondo on that. I need to put fiberglass?

What length should I use? Long hairs or short hairs?

[bmw325csi]

use bondo-glass after you weld. Its a mixture of short strand fiberglass and bondo and it holds up pretty well.

[billy.e30.325i]

what are the holes from?

[evil_twin]

drill bits, and the antenna

[evil_twin]

So I should use the bondo-glass then use THIS after it all?

[Need4Speed1299]

Yes. Its very thin. Dont use too much, the only reason your using it is to make it look better and easier to paint.

[evil_twin]

Cool. and for the bondo-glass I can use THIS right?