Messed up my varnish - SailNet Community
 
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post #1 of 10 Old 10-15-2008 Thread Starter
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Messed up my varnish

I did the first coat on raw teak and the can said to dilute the varnish 50% for the first coat. This was a midnight job so I read that to be a ratio of 1 to 1. I did 4 Oz's of varnish to 4 Oz's of thinner.
I suspect I should have added 50% to the varnish, that is 4 Oz's varnish and 2 oz of thinner. Is that right?
I expect that my first super thin coat will dry eventually then I just continue like nothing happened yes?

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post #2 of 10 Old 10-15-2008
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No sweat. The thinner should help it dry, if you used the right thinner for the varnish. You just want it to soak into the teak to help the next coat adhere better. Mission accomplished.


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post #3 of 10 Old 10-16-2008
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If you have the time to do it right, you actually did good. You want to seriously thin the first coats so the varnish can penetrate the wood for better adhesion. I would do another coat at 60% varnish to thinner then 80% and then a minimum of 4 coats of 90-100%. The next year you should do 2-4 coats, then you can get away with 1 coat a year, unless you in the tropics (then double everything!)


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post #4 of 10 Old 10-16-2008
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My understanding of the relationship between varnish (or paint) is the more thinners used the quicker it dries. Thinners evaporates way quicker than paint so I'm not sure that it'll make the drying time longer.


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post #5 of 10 Old 10-16-2008
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Lots of thin coats are better than one thick coat in terms of adhesion. Using MEK as a solvent will slow down the drying time while acetone will shorten.

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post #6 of 10 Old 10-16-2008
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Be aware that varnish is very susceptible to humidity and temperature while drying. (It can drive you freakin' nuts!)
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post #7 of 10 Old 10-18-2008 Thread Starter
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I called Epiphany's and warned the guy I was about to ask the dumbest varnish question.
He confirmed that when they say on the can to "thin 50%" that means a ratio of 50% to 50% and when they say to thin 25% they mean a ratio of 75% to 25%.
Why they can't just say it that way on the can he didn't know.
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post #8 of 10 Old 10-18-2008
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Quote:
Originally Posted by davidpm View Post
I called Epiphany's and warned the guy I was about to ask the dumbest varnish question.
He confirmed that when they say on the can to "thin 50%" that means a ratio of 50% to 50% and when they say to thin 25% they mean a ratio of 75% to 25%.
Why they can't just say it that way on the can he didn't know.
How does the varnish look?
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post #9 of 10 Old 10-19-2008
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I'm using Flagship Varnish on toe rails and coaming. I'm about 25% down in the can, 3/4 full. What would be the consequences of filling the can back up with paint thinner, acetone or MEK? Will I miss having full strength varnish at some point?
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post #10 of 10 Old 10-20-2008 Thread Starter
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Quote:
Originally Posted by bubb2 View Post
How does the varnish look?

I just put on the second coat. It looks OK where I didn't mess up.

Since this was the coat that was supposed to sink in I just let the wet side touch some stickers so i could coat the other side.

This was a mistake as the stickers show but only for some of them. I sanded most of the sticker marks out but may have to sand some more if the second coat doesn't cover.
I'm purposely making all the mistakes with the hatch covers as they are so easy to work on in my basement.
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