This is the innovation you've been waiting for! The Otto System is a unique, frustration-free artist's tool designed, engineered and used by artist Ron Otto. It employes engineered clamp bars made from poplar, a renewable hardwood. The fasteners are stainless steel, and 1/2 inch coreboard material is also included with each Otto Stretcher.
This unique system makes it fast and easy to stretch watercolor paper without damaging the deckle edge. Your surface will be perfectly flat, and ready to go without any tools or effort. Suitable for any age artist, and portable to any indoor or outdoor venue.