Hi, I am wondering if anybody would offer me a tip on using Minwax Polycrylic Poly (water-base). I have used it on many projects, and always end up battling the little bumps. I believe that the bumps are caused by little air bubbles. Usually most of the bubbles disappear during drying, but usually a few remain. I apply it with a foam brush and try not to work it to much. The best answer is probably not to use it at all, but I have a dust and fumes problem in my basement shop. Any suggestions would really be appreciated. THANKS, Ken
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Replies
If you must use acrylic poly,strain thru fine mesh to remove any contaminates, and use a good quality nylon brush as foam exacerbates bubbles.Best of all, get a box fan in a window and spray it!
Ken - thin the Polycrylic about 10% with water (no more; less if it works for you).
After thinning, use a brushing technique that introduces the least amount of bubbles possible. Using an artists' brush helps keep the bubbles down when you work with waterborn finishes.
There's an article on brushing waterborn finishes at this link that has some good tips that should help you get good results - http://www.targetcoatings.com/home/technician_jeff.html
Paul
F'burg, VA
I want to thank you for the info. That link was extremely helpful. It answered a question that was in my mind about wiping on the finish. This idea might be the answer to the biggest problem with the acrylic poly. One question I still have is ; where do you get a lint free cloth? Thanks for the help.
Ken - linen is the traditional, lint free cloth used for padding finishes. You can get a measure of the material from a local sewing/cloth store. Cut it into 9" squares for the cover of your pad and use cotton (or wool) for the wadding inside the pad. Cotton stuffing used for pillows and such works great. You can wash and re-use the linen if you don't let it dry out.
Paul
F'burg, VA
Ken,I just finnished a 400 sq ft cedar cieling in my bedroom.three coats polycrylic....smooth as glass. A new can should not need strained,but if you want to strain through the foot of one of your wifes old nylons.Use a premium synthetic brush(not a foam wiper).Brush it on,then dry brush it as thin as you can(to thin for the bubbles)don't underwork it,it will bubble every time.Hope this helps SGB
ps I was a painter for 25 yrs
Thanks Again, The info has been great. I tried the wipe on method with a piece of a sheet wrapped around a piece of sweatshirt and it looks to be working nice. I'll get the right materials and try it some more. On the panel sections of the project I'll give a good brush a try. THANKS!
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