Roseburg produces one of the most popular machinable particleboard panels on the market today. Our UltraBlend panels are a premium-quality, mat-formed, multilayer wood particle board. These panels are made predominantly of precision-refined wood particles that are bonded with thermosetting resins. UltraBlend features a highly refined smooth surface and tight uniform core with machinable edges and excellent dimensional stability. UltraBlend particleboard panels are designed for the demanding laminating and edge machining applications of today's precision woodworking industry.