dimples in fiberglass
Printed From: the12volt.com
Forum Name: Fiberglass, Fabrication, and Interiors
Forum Discription: Fiberglass Kick Panels, Subwoofer Enclosures, Plexiglas, Fabrics, Materials, Finishes, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=22182
Printed Date: July 29, 2025 at 3:20 AM
Topic: dimples in fiberglass
Posted By: hbk00
Subject: dimples in fiberglass
Date Posted: December 01, 2003 at 11:32 AM
Got a question I think I allready know the answer to but I'm looking for anymore tips or "tricks" I may not know. I'm fiberglassing a center council and dash and I'm done sanding, baby butt smooth, now the problem I'm running into is after I've primed I can slightly notice little dimples here and there none that you can notice to the "touch" but if you looking at the right angle you can see them, and its probably somthing nobody would notice unless you've glassed before but I know they're there, now how do I get rid of them so its all even and perfect? Just more bondo and more sanding or what? Any help or comments is apreciated. Thanks
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go custom or go home!!
Replies:
Posted By: noob
Date Posted: December 01, 2003 at 12:19 PM
im pretty new to glassing, but yea id have to say more bondo untill its all perfect.....
Posted By: pureRF
Date Posted: December 01, 2003 at 1:40 PM
ive used both of these methods but you can either A. Put on gloves and apply bondo with your fingers to the dimples, the gloves allow you to push the bondo into the dimple. Also make sure all other dust is out of the dimple or the bondo hold will not be strong.
B. This is my fav. Take a syringe and fill it with resin and inject the resin into the hole. let dry then sand smooth. This one seems to work the best because with the bondo it is sometimes hard to get the bondo in a small dimple. you can get the syringe at kroger somtimes for turkeys and stuff hope that helps
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dream it, build it, fiberglass it
Posted By: kustomcarluvr
Date Posted: December 02, 2003 at 11:17 AM
Yeah, if it is like a little pinhole, I would fill it with bondo, just mix a very little bit and then you can spread it on with a razor blade, if you just leave it then it will be more noticeable when it is painted, and you did not go to all of that work to be displeased with it later. Matt
Posted By: hbk00
Date Posted: December 02, 2003 at 6:13 PM
ok maybe I wasn't clear with my last question I asked how to take care of dimples in the fiber glass, not pin holes, dimples like on a golf ball, I want to know how to take care of this, just with bondo and a few more hrs of sanding? Its almost like I put the resin on uneven or something, or maybe I didn't sand all areas enough, allthough I thought about 18hrs on a dash would be sufficient but apparently not...help please
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go custom or go home!!
Posted By: pureRF
Date Posted: December 02, 2003 at 8:14 PM
hbk00] wrote:
Got a question I think I allready know the answer to but I'm looking for anymore tips or "tricks" I may not know. I'm fiberglassing a center council and dash and I'm done sanding, baby butt smooth, now the problem I'm running into is after I've primed I can slightly notice little dimples here and there none that you can notice to the "touch" but if you looking at the right angle you can see them, and its probably somthing nobody would notice unless you've glassed before but I know they're there, now how do I get rid of them so its all even and perfect? Just more bondo and more sanding or what? Any help or comments is apreciated. Thanks
From what you said it didnt seem like they were golf ball size dimples. I usually take "little dimples" as small. But with golf ball size dimples i would start over, or you could go buy a gallon of bondo and not sand untill its all on. ------------- dream it, build it, fiberglass it
Posted By: kustomcarluvr
Date Posted: December 03, 2003 at 10:57 AM
Yeah, I expected smaller but the description was not to good. If you have divits in the dash, then I would still just bondo it, I would expect that they are not even the depth of half of a golf ball, so I would say just to bond the low spots and try to compromise with the edges (sand down everything else to get closer to the divit). Matt
Posted By: Tripnbeats
Date Posted: December 03, 2003 at 12:55 PM
oh man!!!!, guys the kid said the dimples on the golf ball, not the golf ball itself.
Posted By: kustomcarluvr
Date Posted: December 03, 2003 at 4:42 PM
Wow, that is bad, instead of being a description that wasn't very good, it was my reading skills , same deal though. Anyway you say it it will still be the same fix, bondo then sand. Matt
Posted By: pureRF
Date Posted: December 03, 2003 at 4:44 PM
lol my b
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dream it, build it, fiberglass it
Posted By: noob
Date Posted: December 03, 2003 at 6:28 PM
lol.......i was wondering when someone was gonna figure it out......haha
Posted By: pureRF
Date Posted: December 03, 2003 at 7:30 PM
Bondo should work good for those project but just take a marker and circle all the dips then get mixed up bondo and put dots of it on and dont wipe with a spreader or nething. Let it all dry do its like a bump and then sand it down.
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dream it, build it, fiberglass it
Posted By: hbk00
Date Posted: December 05, 2003 at 12:18 PM
Thanks for the replies about the dimples I talked about sorry my descriptions wasn't clear but never the less I got it done. Now its all nice, smooth, no dips, just perfect and wet sanded ready for paint or am I, is there any things else I should do or make sure of before I start priming then painting? I want this to look as perfect as possible.. thanks guys
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go custom or go home!!
Posted By: pjon
Date Posted: December 05, 2003 at 12:20 PM
is this what you are talking about?? Its just a photo i found on another forum. -justin https://www.neverwin.com/new/golfball.bmp
Posted By: hbk00
Date Posted: December 05, 2003 at 7:31 PM
thanks guys for the help with my "dimple" plague sorry for the vague description in the begining but never the less I got it done. Pjon, you hit it right on the head that pic was exactly what I was talking about. Anyway my new question is there anything else I should do to prep for painting? I've finnished sanding completly all the way through 2000g wet. Now is there anything else I should do prior to paint for me to get the best result. Now I know about getting a sandable primer and sanding that as well to a baby butt smooth finnish, is there anything I'm missing? Thanks in advance
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go custom or go home!!
Posted By: pfitz
Date Posted: December 05, 2003 at 7:38 PM
Clean! Make sure the surface is clean and the area you are spraying are clean, more than a few times one of my kids finger prints surfaced after I started painting and dust is always a problem. I like to use an etching primer.
Posted By: kustomcarluvr
Date Posted: December 08, 2003 at 9:17 AM
Just make sure that you are not sanding with anything much over a 240 grit paper, the primer and the paint need something to hold to. Matt
Posted By: Crooked
Date Posted: December 09, 2003 at 8:08 PM
Number 1 Rule working with bondo.....minamize to a minimun......when you put it on..use single edge razor blades, do areas at a time, soon as it starts to kick off on part..scrape off with blade to an almost flush....dont take to much(you'll be reappling it).should take a few sanding strokes....and always wet sand whenever possible, sandpaper cuts alot quicker, and it dont get clogged up on you. a few tips for yea.....can ask me just bout anything, about composites/fiberglass/tooling.
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