Report Another extreme test in The Pegbox Posted 22 hours ago I love these threads on extreme experiments! I have my thoughts, but really, I'm only cellist with zilch experience in making, just in playing. PLEASE DON'T TAKE MY COMMENTS SERIOUSLY! What I'd expect from an MDF back depends on the thickness/graduation. On a thick MDF back, I'd expect the sound to be shrill and piercing, powerful in a really bad way. With a thinner MDF back I'd expect the sound to lose focus and attain a dead sound. On a thick back, I'd expect the bow to feel like ice skating, and on a thin back I'd expect it to lack the possibility to use fast bow speeds. For knowing what I'd expect from your particular back, I'd have to have in my hands. I'm assuming one can't regraduate an MDF back, so will you make thicker and thinner versions too? I could imagine that coating MDF will have a very large effect, expecially if it permeats the material deeply. for instance, I'd expect a Shellac-coated thin MDF back (maybe inside and outside) to work much better than one without.