If you buy pre-mixed shellac, check the date on the bottom of the can. If you not sure how old it is, put a few drops on a metal can lid and let it dry. If you can easily dent it with your fingernail, it's old and dump it. If it's still good, you'll probably want to cut the pre-mixed stuff between 1/3 and 1/2 by volume with alcohol.
If it's too thick when you apply it, it will leave bubbles in the surface because the alcohol flashes off so fast. Don't use shellac on a hot, dry day unless you're applying a thin "spit coat". Use a good quality brush and apply it slowly and evenly again to avoid brush bubbles. I have a favorite badger hair brush that works well.
Years ago, my finishing expert friend gave me some leveler drops to put in fresh shellac that breaks the surface tension to help with bubbles.
I haven't spotted that little jar since we moved.
Time to do a little digging...
If it's too thick when you apply it, it will leave bubbles in the surface because the alcohol flashes off so fast. Don't use shellac on a hot, dry day unless you're applying a thin "spit coat". Use a good quality brush and apply it slowly and evenly again to avoid brush bubbles. I have a favorite badger hair brush that works well.
Years ago, my finishing expert friend gave me some leveler drops to put in fresh shellac that breaks the surface tension to help with bubbles.
I haven't spotted that little jar since we moved.
Time to do a little digging...
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