Quote:
Originally Posted by Bruce Sexauer
The viscosity of the varnish when spraying is very important, as is the amount of air pressure. Telling anyone how to balance these factors is a bit tricky in person, let alone typing in a public forum. This particular varnish as it come from a brand new can and with between a 5% to 10% cut with acetone works very well for me. When the can has been open for a while the varnish seem to thicken some and I use high quality turpentine to keep the viscosity in range. I do all this by feel, and vary air pressure and fluid flow a bit to keep things working right. More than 10% acetone can ruin the entire finish, only did that once. Less than 5% and you are liable to have to deal with witness lines. Sorry to bore the rest of you readers.
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Sorry other readers... Stuff's actually fascinating to me. I suppose the turpentine allows a little slower dry allowing the finish to flow... I use an HVLP conversion gun so will have to play with it a little.... thanks!