How would one go about filling large holes in fiberglass? Like on the dash, with old gauge holes. I was thinking that one would cut a slug of wood undersized, coat it in resin and cloth, then stick it in the hole, and lay some resin and cloth over the front and back. Is this the correct way of doing this because I have never done any major work with fiberglass. Thanks.
Last edited by HawaiianJet; 04-11-2008 at 05:46 PM.
I'm in the process of doing that very thing right now. I'll post come pictures when I get home tonight. I've already cut and fit the 3/4" thick slugs so you can see that part. Next will be to use some duraglass to make it nice n smooth (filler) then lay a piece of glass front and rear, sand and finish. The duraglass is really just to fill in any small cracks/voids so the glass will lay nice n flat and adhere properly. Any voids that will cause an air pocket in the glass will be a delamination waiting to happen. It's also to help blend it in to the existing dash so it all flows seemlessly.
Shaun has some photos on replacing the entire dash (wood) if you want to go that far. He's been checking in pretty regularly so maybe he'll put up a link. His dash was rotted which is why he did the whole replacement of the wood thing. Mine's just got a bunch of old gauge holes in it that don't make any sense.
Actually I went back in and found the link. He's done some really nice work on that boat. Check the rest of his gallery for other info.
The Way I Did Mine Was Cut Out A Wood Plug Put In The Hole Glass The Back Side With Mat And Resin On The Front Just Duraglas It Block That Out Then Use Some Glaze Putty Block That Out Seal It And Paint Its Held For 3 Years. Know Problem
Used dowel for the smaller holes. 3/4" plywood plugs for the big ones.
The small gauge holes just used a holesaw of the same size and
it worked great. The bigger gauge holes had to be cut with a jigsaw
and sanded to fit. I don't have a holesaw that large.
I gots lots o holes. Speedometer, tach, oil pressure, water temp,
volt, fuel level gauge, stereo, and numerous switches.
Last edited by Squirtcha?; 04-11-2008 at 06:15 PM.
Bondo will crack out over time.Use fiberglass and get as close to perferct as you can.Use very little plastic filler(or none at all) . When fixing fiberglass use fiberglass for the repair.You'll be much more happier with the end results.