i have just built a crib for my new born son (hard maple). i sanded it down to 220 paper, wiped it down with mineral spirits, and with a tack cloth. i brushed on a water based polyurathane and when it was dry it feels like sand paper. what did i do wrong? its upsetting to put in all that time sanding only to have the finnish be so rough. should i have used an oil poly. i only have one coat on now so im afraid to go any further.
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Replies
You didn't do anything wrong. The water in the poly has raised the grain. If you sand again and put on another coat of the poly it will be smooth. In the future, you can pre-raise the grain by wiping distilled water on the wood then sanding when it's dry.
Rich Knab
People of mediocre ability sometimes achieve outstanding success because they don't know when to quit.
Rich has the answer but you should be aware that the first coat of any finish is going to be less than smooth. Even with raising the grain beforehand, it will still somewhat raise again with the first coat. Sand it lightly with 320 paper and then apply the next coat and you should be in business.
You should also be aware that waterbased finishes are not the best choice for a crib. Waterbased finishes are easily damaged by liquids that come out of babies and can also be damaged from being chewed on. Cleaners containing ammonia and some other cleaning chemicals can also soften the finish. Much better is an oil based clear finish. You might want to consider letting the current finish fully cure, then scuff sanding it and applying a couple of coats of oil based varnish or poly varnish.
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