i have been using a water based wood varnish when using powders and flrits ,and find it works very well even more so if you are working over a light table as the heat from the lights dry the varnish very fast . i just paint a line that i want the apply the flrits or powders ,when dry use a hobbie blade to cut the edge to however thin or thick,,the varnish does like to flow a bit.,,the best part about the varnish is next day you can really take to the work with a good brush and clear it all up,,

i had the guys in the paint shop add a black tint this helps to see where you have painted ,,oh and no residual after firing and only a light smell


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