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ContinuousWave: Whaler Repairs/Mods
Gel coat repair and scratches
|Author||Topic: Gel coat repair and scratches|
posted 06-13-2002 09:48 PM ET (US)
Just finished filling in some spider cracks on our 11' Whaler, using Spectrum Color. Would like to request your assistance with the final steps. Since this was our first attempt at gelcoat repair, the hubby went a little thick on the gelcoat, but that's not the problem. Wet sanded down with 220 and worked up to 800. Still, there are some scratches and dull spots from wet sanding. Any advice? Rubbing compound doesn't seem to be doing the trick. Secondly, Spectrum was not an exact match. How long will it take for sun exposure to match? What are our options if sun exposure will not work?
posted 06-13-2002 10:22 PM ET (US)
I recently did my no skid on '88 Newtauk. The color was a bit darker and glossier. I mix 50/50 spectrum color (desert tan) and duratec high additive on first coat and 70/30 on second. I was told to us a plastic scrub brush and some bleach to get a dull lighter finish. I did not. I believe it will fade on its own. My deck is two toned now, but looks great and the hull should not see any h2o. call spectrum color as they were helpful 800 754 5516.hope that helped. I am a new boater some get a second opinion as mine is not gospel. John O
|Tom W Clark||
posted 06-14-2002 01:44 AM ET (US)
Regarding color: If it doesn't match now it probably never will. My experience with Whalers is the color is slightly different on every boat. Age and sunlight takes its toll too. I found on my 18' Outrage that even different spots on the same hull required slightly different shades or gelcoat. Sunlight had had that much effect.
What I recommend is using some white or gray gelcoat to lighten or darken the color you are using. This is a batch by batch, eye ball method but is the only way you can really get it right on.
If you haven't done so already, you might wet sand the existing gelcoat surrounding the repair area to get down to the more original color of the gelcoat. Then match your Spectrum gelcoat to that color.
Regarding the sanding and dull spots, I would think 800 grit is plenty fine before going to rubbing compound, but be aware that even if you've done a great job with the 800 grit, scratches and dull spots will still remain if the sanding was not thorough with the lesser grits. A really good sanding with 400 will not make up for a poor job with the 220.
You may also want to try even finer grits of sand paper. 1000, 1200 and even 1500 grit are readily available though sometimes labeled "fine" and "ultra fine".
posted 06-14-2002 02:28 PM ET (US)
Another helpful trick with matching gelcoat is to mix a few batches, say a half-teaspoon worth with varying amounts of gray or whatever color you need before adding the catalyst. Place the samples on or near the area of repair to test the color. When you have the right color match, wipe off the gelcoat samples, mix up the correct color formula,add the catalyst and apply. Like Tom says, the color can vary all over the boat but I have used this method with good success.
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