Judith Frohreich

This is an inexpensive and easy way to stretch watercolor paper that can be used again and again .  You can build them any size that you will find in a canvas panel and foam core.  It is light , very sturdy and a fraction of the cost of the boards marketed for the same function and I also expect it will last longer.  I have had no warping.  Although my demonstration didn't show it, you could apply a coat of white acrylic or gray house paint to the panel before you put it together to improve life of the panel but I have had no problems.  I hope if you try this, you will be as pleased as I have been.  This is the only system I use now for stretching watercolor paper!!  The foam core on the back side functions as a layer to prevent the tips of the staples from getting through to snag or scratch the painter.:)