Leo did some explaining of techniques for surfacing wood prior to painting:
Shellac + whiting mixed into a paste (add a little yellow core, or other pigment (don't use Tempra)) can be applied to the wood, evened out, then let dry.
(Whiting is sifted lime stone)
Then sand it down. Use coarse paper to wet sand with methyl hydrate--this takes the high thick layer off quickly.
Continue with finer grade paper until the surface is smooth
Then dry sand to the finest finish
Alternatively:
Bond + whiting
Acrylic paint thickened with whiting
The result is a hard surface that is smooth and ready for spray painting or other finish including shellac, lacquer
Leo used Behr interior enamel house paint--brown colour
If you spray the acrylic paint it has to be diluted with water very thinly so as to go through the airbrush system.
Leo showed how to polish a finish using:
sand paper up to 10000
Pumice
Rottenstone
Cerium oxide
Finally waxing with Carnuba: rub the carnuba in using leather-a leather glove would work
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CRL Cerium Oxide is a high grade optical polishing compound used to lessen and polish scratches from mirror bevels, table top edges, glass in vehicles or structures. CRL Cerium Oxide is mixed with water to form a paste or slurry. This compound has excellent suspension qualities and will not harden. Contains no zinc oxide, and meets most local disposal ordinances. This Cerium Oxide Compound can be used with a hand pad for light surface cleanup, powered hand devices for scratch and surface repair, mechanized scrubbers in mirror silvering lines, or as the final polishing step in multi-stage edging and beveling equipment.
Leo suggested we all do a small bowl or vase so as we can practice this paint finishing technique.
We agreed to bring large blanks next session for bowl turning on the bowl lathe.
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