Can shellac be sanded and rubbed out like lacquer? If so, why not spray it on instead of going to all the work of applying the shellac by hand?
Yes, shellac can be applied and rubbed out much in the same way as lacquer. The big difference is that lacquers are designed as emulsifying products. That is, each successive layer of material chemically amalgamates with the previous layer making it possible to spray, sand, and rub out the final finish without layer sand-throughs. This is not possible with shellac. If you were to spray shellac, the layers will be very thin and would not amalgamate. Any attempt to sand and rub out to a fine finish would cause layer burn-throughs. Again, the best way to amalgamate shellac is by the pressure of the muneca using oil as a lubricant.
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