There are a few dings on my 91 DA which I decided to do some body work on it myself rather then taking it to the body shop, I've done body work before specifically on motorcycles. So I sanded down the area with the dent, making sure it was porous enough for the body filler (bondo) to adhere to, I used 400 grit, now as I smoothed down the bondo after drying eventually the sanding got deep enough where I got to bare metal, sanding through the original paint, primer then to bare metal. I assume it should be okay because I am repainting the entire car, im just using bondo and sanding it down to any part of my car that has dents. Is it still fine for me to have reached to that point? It's smoothed out the dents of course, just bare metal shows as well, which is unintentionally during the sanding.

 

TTT!

 

It felt like I was going in circles reading that. But if your asking if its ok that there is bare metal showing after sanding, then yes it is. As long as you get some epoxy or some type of rust preventing primer on there soon.

 

I would assumed primer already has some kind of chemical bond that would prevent rust? Cause right now, I just have bondo smoothed out to fix the dent, but during the sanding of it, I hit bare metal, and thought of leaving it the way it is until i get the car painted.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by swappedcx &raquo;</TD></TR><TR><TD CLASS="quote"> rust preventing primer </TD></TR></TABLE>

Which brand would you suggest?

 

how are you sanding it? when you sand off body filler you have to do it with cross blocking. even those its a quater sized dent, you want to sand it with a large block, if not you are going to get waves. go ahead and go put another layer of that bondo stuff. it's not supposed to be thick at all. Press and squeeze it on tight. then x block it.

 

im using a large block, i sand in a forward to back motion, not in circles if that makes any difference. I put layers at a time, till I can get the right amount of surface to sand down smoothly.

 

was the dent very deep?? if so you need to metal work it first with hammer and dolly or a dent puller.. you dont want a lot of bondo on anything.. no more than a 1/4 thick
also yes you are supposed to go down to bare metal when applying bondo... you DO NOT want to put filler on paint.. thats a no no! sand down enough of the area around the dent so you can feather edge it in too... then prime and paint!
good luck

 

Just hit the area with some Epoxy primer. I use PPG, but you can use whatever you want or whatever your paint supplier will sell you. And if you really want to get into it, you can lay down some epoxy primer UNDER the filler (a little late now, but you know next time). Its far easier for any moisture trapped in the filler to get inbetween the filler and bare metal, not so easy with a base of epoxy down.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by alltech_hybrid &raquo;</TD></TR><TR><TD CLASS="quote">was the dent very deep?? if so you need to metal work it first with hammer and dolly or a dent puller.. you dont want a lot of bondo on anything.. no more than a 1/4 thick
also yes you are supposed to go down to bare metal when applying bondo... you DO NOT want to put filler on paint.. thats a no no! sand down enough of the area around the dent so you can feather edge it in too... then prime and paint!
good luck </TD></TR></TABLE>

not deep one dent is about a quarter size, and the other about a dime size, the bondo is about 1/4 inch or less for sure.


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by alltech_hybrid &raquo;</TD></TR><TR><TD CLASS="quote">Just hit the area with some Epoxy primer. I use PPG, but you can use whatever you want or whatever your paint supplier will sell you. And if you really want to get into it, you can lay down some epoxy primer UNDER the filler (a little late now, but you know next time). Its far easier for any moisture trapped in the filler to get inbetween the filler and bare metal, not so easy with a base of epoxy down </TD></TR></TABLE>

Thanks for the info, ive done body work before, but this my first time attempt in paint my car.