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Extending the Working Time of Waterborne Stains?
Question
Forum Responses
From contributor R: The cooler the temp of the shop, the better, and try to stay out of any air movement from fans or heating ducts. I like early morning before the shop is fully heated. You do have to move quickly, and don't be sparing with the stain. Target's water stain, for one, has a much better work time than what you're using. From contributor M: Propylene glycol. From contributor A: We use Target Coatings Oxford stains. Time in a warm shop is about 5 minutes, which is long enough to do large man doors (7' x 40"). Using clear glycol, as mentioned above, works for some products, but be sure to do test panels and check for adhesion as well as consistency between the panels. Thinning with glycol can reduce the depth of colour and should be done in precise measures so that it can be repeated. If you don't do it precisely, you can end up with differing color tones from one panel to the next, should you not mix enough for the project.
From contributor M: Use ten-twelve eyedroppers to a quart. You may have a hard time getting it from your supplier. You can also use plain glycerin, which you can buy at any drug store. They both will work with water base glazes. Use the same amount as the WB stain. From contributor P: I use a spray and wipe method. I spray the stain on fairly wet, and immediately start wiping it down. Waterbased stains don't usually require much time to penetrate, so this works pretty well. You have to watch backs of doors and adjoining surfaces for any drips. They're hard to blend in when you flip the door to do the other side, especially if you let them dry. From the original questioner: Thanks everyone, great ideas. Contributor P, I assume you use an airless sprayer or an HVLP? I've got a nice airless, so I could do that or try the poly glycol suggestions. I'd like to try the Target products but I've got too many stain samples to try another product at this point. I'll try Target on the next project. From contributor P: I don't have an airless (yet - there's a Kremlin on eBay tonight!). You can spray stains with any kind of gun. I use a turbine HVLP or conventional gun. An airless may be overkill for stain. You're really just trying to get the stain on quickly so you can work it before it dries. I should mention that I rarely use WB stain as my main colorant these days. I usually start with a WB dye, then do a second coat with a diluted WB stain, then maybe a glaze. I haven't yet seen a WB stain that I like all by itself. Would you like to add information to this article? Interested in writing or submitting an article? Have a question about this article? Have you reviewed the related Knowledge Base areas below? 
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