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Old 13-07-2012, 21:44   #1
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bottom paint application options

I race quite often. So previously, I spray painted the bottom and just wet sanded it. I recently came across something that recommended,in addition to the sanding, barnishing it with steel wool. So I was wandering if this extra step was worth it
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Old 13-07-2012, 22:53   #2
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Re: bottom paint application options

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I race quite often. So previously, I spray painted the bottom and just wet sanded it. I recently came across something that recommended,in addition to the sanding, barnishing it with steel wool. So I was wandering if this extra step was worth it
Depends on what product you are using and what you are sanding with. For a race bottom I usually spray VC-17m and wet sand it to 1000-2000 grit finish, depending on the client. Steel wool is usually 400 grit or coarser, so if you have been sanding to a coarser finish than that it may work for you. Personally I think sanding is much more efficient.
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Old 13-07-2012, 23:42   #3
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Thank you. You just saved me from a huge waste of time! Do you usually use grits to work up to 2000 grit?
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Old 14-07-2012, 02:37   #4
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Re: bottom paint application options

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Thank you. You just saved me from a huge waste of time! Do you usually use grits to work up to 2000 grit?
Yes, I spray VC-17m with an airless rig and then wet sand the bottom. If you spray carefully you can start with 600 or even 800 and work up, 1000, 1500, 2000. A true guide coat really helps, especially at the higher grits, where it is very hard to tell if you have sanded an area or not without guide coating at each step. This results in a very slick mirror finish.
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Old 14-07-2012, 06:00   #5
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Well a....sounds like a lotta work, but wow, does that look good! What brand would you recommend?
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Old 14-07-2012, 07:02   #6
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More specifically, ablative or leeching paint?
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Old 14-07-2012, 13:42   #7
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Re: bottom paint application options

VC-17m is my preferred race bottom product. Everyone has their favorite flavor though.


VC 17m Extra with Biolux Antifouling Boat Paint | Interlux
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Old 14-07-2012, 14:08   #8
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Re: bottom paint application options

Take a look at Sigmaglide, now thats a shiny bottom!
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Old 14-07-2012, 14:24   #9
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Quote:
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VC-17m is my preferred race bottom product. Everyone has their favorite flavor though.

VC 17m Extra with Biolux Antifouling Boat Paint | Interlux
I've always liked interlux products, haven't used them in a while. Guess ill give em a go next week!
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Old 14-07-2012, 14:51   #10
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Re: bottom paint application options

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I've always liked interlux products, haven't used them in a while. Guess ill give em a go next week!

Make sure whatever is on your bottom now is compatible first. It's a mess to spray too. Often you can rent an airless rig and just buy it a new tip so it shoots nice. If I'm going to do a wet sanded finish I apply a couple of extra coats as well. Don't overspray anything, cause VC-17m doesn't come off! It is a race winner though...
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Old 14-07-2012, 14:59   #11
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How does the vc17 hold up in salt water? Seems to be a fresh water paint.
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Old 14-07-2012, 15:43   #12
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Re: bottom paint application options

VC-17 doesn't protect as long in saltwater as other bottom paints. I wouldn't use it on a cruising boat, but hard core racers seem to love it.
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Old 14-07-2012, 15:48   #13
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I'm actually not sure it'll be so bad, the bay isnt the highest fouling of waters. I have looked at the interlux baltoplate after your recommendation, how do the two compare as racing paints?
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Old 14-07-2012, 18:39   #14
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Re: bottom paint application options

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I'm actually not sure it'll be so bad, the bay isnt the highest fouling of waters. I have looked at the interlux baltoplate after your recommendation, how do the two compare as racing paints?

I think VC-17m cures hard as nails, unlike many other similar products. This feature is what makes it so great for a race bottom, you can polish it to a mirror finish and it will stay that way. But the same feature means it isn't as good at anti-fouling as similar products (baltoplate). So it depends on your priorities and maintenance schedule. For a serious race boat, which will have the bottom cleaned before every race and probably lives out of the water between races as well, obviously less antifouling capacity is no big deal. This is where VC shines, it makes the slickest fastest bottom out there IMHO. If your boat is not that, you may consider other options. If you live in a place where it's legal to clean hulls in the water and you have a regular dive schedule, that would be another reason to go with VC, or if you live in a low-fouling area. Always lots to consider when selecting a racing bottom...
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Old 18-07-2012, 18:35   #15
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Quote:
Originally Posted by minaret

I think VC-17m cures hard as nails, unlike many other similar products. This feature is what makes it so great for a race bottom, you can polish it to a mirror finish and it will stay that way. But the same feature means it isn't as good at anti-fouling as similar products (baltoplate). So it depends on your priorities and maintenance schedule. For a serious race boat, which will have the bottom cleaned before every race and probably lives out of the water between races as well, obviously less antifouling capacity is no big deal. This is where VC shines, it makes the slickest fastest bottom out there IMHO. If your boat is not that, you may consider other options. If you live in a place where it's legal to clean hulls in the water and you have a regular dive schedule, that would be another reason to go with VC, or if you live in a low-fouling area. Always lots to consider when selecting a racing bottom...
Well, I'm not so much a pure racer, not to the point where I would be willing to have that much money spent on the bottom. Anything close to similar with better anti-fouling capabilities? I.e., how is baltoplate as a race bottom?
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