How to Use a C Clamp with Stretcher Bars

One of my Quilt University students asked me to post a picture of how to use a C clamp with wooden slats to make a completely adjustable stretcher bar system.  This is a picture of a HUGE one with two 1/4" x 2" slats. You can use any size wood, and smaller clamps. I used a big one in this picture for visual purposes. My favorite size is a 2" clamp.

Be sure to paint or varnish the wood so that when dye is applied, it won't soak into the wood and come back later on other projects to bite you in the butt, so to speak. Dyes, even if washed off wood, can leach back out and stain your future projects. Ask me how I know. :-)