Ironwood’s engineering team designed the S135MRK three head wide belt planer sander to be a robust blend of innovation, dependability, and quality. It is the most technologically advanced model of the Ironwood wide belt sander series; designed for a serious woodworker who demands absolute precision in sanding. The S135MRK includes a helical cutter head in the first position, a rubber contact roller in the second position, and a combination head to finish out the sequence. All sanding heads feature poly-v-belt drives and height adjustable contact rollers with position indicators for grit compensation, enabling quick set-up times and maximum stability, precision, and sanding quality.