Too much fiberglass (New and improved!)

[The Producer]

Hi all:
I have some quarter panel rust. Some severe quarter panel rust.
Currently, I'm using fiberglass in place of the metal I cut out (Sooooo much metal).
Anyway, some of the fiberglass has developed ripples. They look like they'll be sticking out when I'm done.
I tried pressing the fiberglass between wood and leaving it, but it flexed back into it's original shape as soon as I let it go.
So, Can/should I sand it down? Or should I just use a cut off tool to remove the extra material?

PS. Most of the fiberglass is well below the metal line. I plan on bringing it close and using Bondoglass to make it perfect.

[Zoom Zoom]

Either way (and especially with the sander) make sure you wear a mask. Vaporized fiberglass isn't good for your lungs.
No sir. It isn't

[The Producer]

Either way (and especially with the sander) make sure you wear a mask. Vaporized fiberglass isn't good for your lungs.
No sir. It isn't

Well. I have some kind of kick ass resporator. I think is't NIOSH approved and that's supposed to be a good one . I've used it before when I laid the fiberglass and when I've painted things and you can't even smell anything.

[sunburn]

hehehehehe he said"Laid"!

[Zoom Zoom]

hehehehehe he said"Laid"!

Well, since Layed comes up on my spell check, I'm going to assume that's the correct word and usage. Which laid layed you?

[The Producer]

Let's get back on topic. I need to know what to do with this excess.
Tomorrow I plan on adding more layers for strength. Should I trim/sand before then? Or wait until all layers are added and then modify?

[SOHC-FTW]

The correct way is to cut the rust out an weld a patch panel back in place.Then grind the welds down work the metal close to its original form.Then apply all metal, and filler needed to get it back in shape.
Using tiger hair or any other form of fiber glass or body filler will lead to the rust coming back pretty soon.

[JoshM]

I've been watching the progress of a past member's fiberglass progress on Facebook. Too bad he's banned, he'd probably be of great help since he's doing the same exact thing as you at the same exact time.

[The Producer]

Hey man that's great, but honestly:
Cut or sand? It's morning and I want to get to this after breakfast.

[NyQuil]

I've been watching the progress of a past member's fiberglass progress on Facebook. Too bad he's banned, he'd probably be of great help since he's doing the same exact thing as you at the same exact time.

yeah geoffm is doing it too and he's having trouble with it rippling too.

here's something from him on facebook:
"Next question: My fiberglass has begun to ripple, and some of the ripples seem to be above where I want the surface to be. Should I sand these down, or use a cutoff tool?"

look him up, you two could probably work on it together.

[The Producer]

yeah geoffm is doing it too and he's having trouble with it rippling too.

here's something from him on facebook:
"Next question: My fiberglass has begun to ripple, and some of the ripples seem to be above where I want the surface to be. Should I sand these down, or use a cutoff tool?"

look him up, you two could probably work on it together.

http://www.cb7tuner.com/vbb/member.php?u=27113
^ That one?
He has no contact info. How am I supposed to get a hold of him?

Also, I would greatly appreciate it if the next response was to sand or cut, because now I'm done with breakfast and want to start.

[NyQuil]

i'll pm you a link to his facebook page. he has enough enemies here, i'd rather not post it to the public.

why not just start sanding and see if that will get it below the "surface" line? that way if it doesn't work you can still use the cut off wheel.

[Wickit]

Also, I would greatly appreciate it if the next response was to sand or cut, because now I'm done with breakfast and want to start.

The correct way is to cut the rust out an weld a patch panel back in place.Then grind the welds down work the metal close to its original form.Then apply all metal, and filler needed to get it back in shape.
Using tiger hair or any other form of fiber glass or body filler will lead to the rust coming back pretty soon.

Question was answered already, unless u just didn't wanna take his advice or didn't see it through all that spam.

[SOHC-FTW]

Question was answered already, unless u just didn't wanna take his advice or didn't see it through all that spam.

Yup, an also OP if your going to do it your way you should know fiber glass ripples its just the way it is especially when its not a formed part.Only way to get it close is by sanding it down to where you are at a happy medium with the high an low spots.Then apply a filler to get it close (Use as little as possible) also if you have any pin holes in either theres a few glazing puddys to fix that right up.Just know since your going this route the filler will eventually crack along with the fiber glass, and the rust will come back way sooner than a proper patch panel repair.Best of luck to ya.

[The Producer]

Yup, an also OP if your going to do it your way you should know fiber glass ripples its just the way it is especially when its not a formed part.Only way to get it close is by sanding it down to where you are at a happy medium with the high an low spots.Then apply a filler to get it close (Use as little as possible) also if you have any pin holes in either theres a few glazing puddys to fix that right up.Just know since your going this route the filler will eventually crack along with the fiber glass, and the rust will come back way sooner than a proper patch panel repair.Best of luck to ya.

Wow. I completely missed it through all that.

Thanks for the advice everyone. I ended up having a buddy come over and help me. We used a cut off tool and a grinding wheel to get it back into shape.
Then we applied some more layers.
All in all a good days work. We should be ready for Bondo tomorrow.