Wet Sanding Schooner Varnish

When wet sanding Interlux Schooner Varnish between coats, how much sanding is enough sanding?  I'm willing to put in the time for high quality results.  At the same time, I don't want to over do it and travel needlessly into the pit of despair. 

Do I treat it like epoxy prep and go for the "all over smooth and foggy" look?  After some work last night, I'm about half way there, with a few areas that are lightly scuffed, but still slightly shiny.  The base epoxy coat is flat, so I know I'm not chasing structural low spots. 

Thanks in advance.

Dan - Victoria MN

4 replies:

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RE: Wet Sanding Schooner Varnish

Dan, Wet sanding is a touchy thing. If you have prepared the base correctly(made it smooth enough) all you want to do is take the sheen off the entire surface without going through the coat your sanding. In other words sand enough but not too much. Experience will get you there. Remember,  you can't have a good varnish job without a smooth base.   SEEYA Jack  

PS   I don’t use Schooner Varnish but I’m not aware of any property in it that would call for any other practice than the one I outlined.

RE: Wet Sanding Schooner Varnish

Dan, another thought, Thin your varnish so that it flows well and has as little brush indentation as possible. The next coat will not adhere well to a shiny spot. SEEYA Jack

RE: Wet Sanding Schooner Varnish

You can actually use a W-D paper that is too fine. The trick - between coats- is to use a grit that is coarse enough to dull the surface leaving very light sand scratches that create tooth for the next coat of varnish and fine enough to not leave sand scratch swells in the next coat. The finer paper or steel wool in a final coat will allow a satin or polishable surface. So then, you may want to do some trial samples to perfect your technique and judge for yourself.

Also, reducing varnish will make it dry harder and thinner, and the harder it is, the more tooth is required between coats. Use a brushing liquid such as 333 to enable the varnish to flow and even out any brush marks before it begins to set a membrane as it begins to dry.


two more cents.... 

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