Powder type glazes are a very unique product;
they are part toner
and part glaze. What makes it so unique is that you apply it like a toner and then selectively remove it to highlight moldings or other details.
Powder type glazes can also be used for certain glazing techniques, but with
much quicker dry times, and greatly reduced labor.
Powder type glazes are sprayed on wet and then quickly turns
into a powder. They can be dry enough to work with in as little as 1 minute dry time and does not need to be sandwiched between two coats of vinyl sealer. Once the glaze is sprayed on the areas where you want
it and it has dried the appropriate amount of time, the excess is removed with a ScotchBrite pad.
The solvents in powder type glazes are very aggressive. They try to bite into the layer of finish below so they
typically work best over post-catalyzed finishes or high
quality precats that has
cured for over 12 hours. The longer you let any of the sealer coats dry, the less the glaze will etch into it, and the easier it will be to remove the glaze from the surface. This is important when you do techniques
like the Ceruse Effect detailed below.
When powder type glazes are applied in very light coats, it
almost immediately turns to dust and can literally be wiped off with your finger. This technique works well for shading and toning.
If you spray the glaze slightly wetter and let it sit a
little longer, you will notice that the glaze slightly marks the texture of the woods like maple; this gives it a less painted look than regular toners.
The wetter the application, the more aggressively the
glaze bites into the finish. If the glaze is applied heavy, its color may be difficult to remove completely. The longer you let the glaze sit before rubbing deeper the color will etch into the sealer coat. Dark glazes
on light painted finishes can be difficult. Powder type glazes work best on painted surfaces when there is a coat of
clear over the paint. While this type of product may not be for every glazing situation, when used
appropriately it will give you good results and save you considerable time.
Make samples using different application rates and dry
times to find the right combination for your project.