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Old 08-16-2013, 07:00 PM
mneff1 mneff1 is offline
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Can I patch this myself? Gelcoat Repair

Uh oh. I need help. I had an accident, no need to explain how, it's over.

However, I could use some help. I purchased a quart of the spectrum gelcoat to repair the damage. http://www.iboats.com/Mastercraft-20...view_id.835777

I have 2 gouges. Attached are 2 images of each gouge. One is about 8 inches long and one is 6 inches long. The are not deep. It's weird because I thought I would see fiberglass underneath the gelcoat but it almost looks like metal. It has to be fiberglas.

It's a 2010 MC TT PS 197.

Do you think I can just grind the edges down or could I use sandpaper. The edges are jagged but they are on firm. I can't knock them off if I try to.

Also, I am concerned that it's on an corner. Can I get it close enough to match?

Any ideas on how to mix the gel coat and the catalyst?

My plan would be to grind, clean with asetone, tape around edges, apply gelcoat with putty knife, let dry and sand 400, 600, 800, 1000, 1500, compound then wax.

Thanks for your help.

Mike
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Old 08-16-2013, 07:08 PM
snork snork is online now
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No problem mon, lay the gel on nice and thick, sand excessive gel and re-apply then sand again with finer sand paper, repeat till its unnoticeable
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Old 08-16-2013, 07:50 PM
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mikeg205 mikeg205 is offline
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Gind it easy as to not chew into the glass. If it's not perfect - since gel is 3 years old already - prolly won't be perfect - but so close if anyone looks at real close - poke them in the eye with a sharp stick....

Pic is of where I had a gouge... couldn't take a before picture.. never want to see it again...
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Last edited by mikeg205; 08-16-2013 at 08:03 PM.
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Old 08-16-2013, 08:06 PM
mneff1 mneff1 is offline
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Thanks guys! So you think I should grind just the edges and be careful not to go into the glass? Just want to be sure. I don't have a grinder. I'll need to find one.

I will delete pics as soon as I fix it
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Old 08-16-2013, 08:09 PM
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Kweisner Kweisner is offline
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I'm thinking you want to go easy on the edges--maybe a Dremel is what u need vs a traditional grinder?
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Old 08-16-2013, 08:21 PM
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hewlett6621 hewlett6621 is offline
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What he said the perfect tool for the job.
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Old 08-16-2013, 09:37 PM
maxpower220 maxpower220 is offline
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Watch a few youtube videos. It's not that hard to work with, but the color match is the difficult part. Since your boat isn't that old, it will probably be pretty close.

I start with 800 grit and work up. Also, I found wax paper to be helpful in "smoothing" the gel coat onto the surface.
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Old 08-16-2013, 09:43 PM
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JRW160 JRW160 is offline
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Dremel it out then clean it with acetone before patching the gel. I had a couple of gelcoat nicks in a similar spot earlier this year. I covered the new gel with packing tape immediately after I applied it and it smoothed it out really well. I let it sits for a few day then pulled the tape. After another couple of days I wetsanded it, then buffed and polished it.
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Old 08-16-2013, 10:19 PM
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scott023 scott023 is offline
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Quote:
Originally Posted by JRW160 View Post
Dremel it out then clean it with acetone before patching the gel. I had a couple of gelcoat nicks in a similar spot earlier this year. I covered the new gel with packing tape immediately after I applied it and it smoothed it out really well. I let it sits for a few day then pulled the tape. After another couple of days I wetsanded it, then buffed and polished it.
This is what I've had a couple buddies do as well. Can't even tell where the damage was.
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Old 08-16-2013, 10:22 PM
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Start by grinding away the damaged area to create a scalloped area. Mix epoxy resin 50/50 with mineral spirits and brush it over all of the exposed fiberglass. This will allow the resin to saturate deep into the fiberglass and provide strength to the repair area. Then, lightly sand with 320 before applying the gelcote. Brush it in several thin layers until it builds up just over the thickness of the undamaged area. Then, wet sand with 400, 600, 800, 1000, 1500, 2000. Each sanding will get rid of the scratches from the previous sanding. Then, buff out the repair area. Follow with a good wax. Should blend perfectly.
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