Water media, acrylics, tempera, gouache, water sheens, etc., allow, in principle, any type of protection product, be it water-containing oil or other solvents. Oil media, oils, patinas to fat, dyes, etc., restrict the use of protective agents to products that are compatible with the diluent medium or vehicle used in its composition.
The lean, general rule, are all those water-based products or alcohol (eg. Shellac). The acids, however, are those products or synthetic oil base.
For guidance, the meager diluted with water or alcohol and fatty acids with turpentine, thinner or special thinners. We offer a small box where you can find guidance based primarily on the use that you will give the chosen object:
Repair techniques and products for wood surfaces
For heavy use objects such as trays, tables, backs of beds, chairs, wood spotting: synthetic varnishes, nitrocellulose, polyurethane lacquers, liquid glass, coatings and/or marine varnish. Some of these products are water I and others do not. Remember that, in principle, the products are more resistant to water but their application a little more work. Note that the final gloss is a decisive factor for some of these products on the market with three types of sheens: gloss, satin and matte.
For objects of intermediate use as lamp bases, picture frames, table decoration boxes, pieces of plaster, bisque, papier-mache (candlesticks, boxes, etc..) Metal chandeliers, etc..: Acrylic varnishes in three shiny, colored water-based varnishes, patinas fat or water, waterborne polyurethane coatings, etc.. In these objects have to provide more than the treatment given the type of cleaning to be borne: usually with a cloth or feather duster.
For minimal use objects or eminently decorative, hanging frames, pieces of plaster, bisque, papier-mache (sculptures or replicas): water acrylic paints, waxes, etc.. Remember that extra protection is advisable. For example, use an intermediate piece left over protection not own a piece of heavy use. Experience dictates that in certain decorative styles waxing end of a piece is the effect and proper protection even if they are objects of intense use. Remember waxed furniture in a traditional way, should receive adequate maintenance.
Complete their work does not rule with a “Polishing” if the subject deserves it and you or your client is willing to grant him the necessary care.
Regarding the mode of application, each artist has his method, which may or may not match the manufacturer’s instructions. Anyway, read the product labels and make their own experiences in sticks or objects “witnesses”, ie small samples with the same decorative technique that shows the protected object. This practice will help ensure that the chosen protection product does not damage the surface chosen, since some very delicate decorative effects with certain protections detract.
Many of protective products modify the final pitch because they are not completely colorless and can provide a finish that can range from mild to intense amber tone caramel color.