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== Artist's Oil Colors over Shellac  ==

Have an ornate mirror frame (see enclosure), with inner border for future painting.  The frame is basswood, gesso (whiting & rabbit skin glue) approx 4 coats, then water gilded.  The (not gilded) inner border is gesso that has been sanded smooth, then a coat of 1 1/2# shellac, sanded smooth, then another coat of same shellac...then sanded smooth once again.  The remaining shellac layers are quite thin. 

Note:  The "shellac" product used was actually Zinsser Seal Coat properly thinned to reach 1 1/2# cut.  Specific info rel. the Zinsser product is at: 

http://www.zinsser.com/pdf/TDB/SealCoatTDB.pdf 

Any particular caution or further suggestion(s) you might provide in order to use any (Professional) Artist Oil paints.... over the gesso/shellac inner border area? 

Ed McKamey

*FYI
I contacted 11 other possible sources of an answer to above question.  Should you be interested in the consensus, "It is ok to use artist's oil colors over DEWAXED type of shellac, and assure that the shellac surface is clean & sanded dull (eg. 220 grit), to allow oil paint to adher.  Enough said!