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Polyurethane Fab Guide

R E D C O™   P O L Y U R E T H A N E

F A B R I C A T I O N   &   M A C H I N I N G   G U I D E L I N E S

The following guidelines are recommendations for polyurethanes greater than or equal to 75D (hardness, durometer value) including; Redco 750, Redco 750SXL and Redco SPS2000.
Redco Polyurethanes can be efficiently machined using conventional machine tools and most woodworking tools.  Heavy duty cutting tools must be used due to the friction developed while cutting.
A conventional, high-speed, heavy duty drill is adequate for most drilling requirements.  A sharp standard wood auger bit or a sharp twist drill bit will produce satisfactory results.
A 20 – 80 grit wheel should be used when grinding with a surface speed of 6,000 – 8,000 feet per minute.
Band saws work best for cutting.  A claw tooth metal-cutting blade with 4 – 6 teeth per inch is best for dry cutting.  For circular saws a coarse tooth carbide-tipped blade with a wide set produces the best results.  An 8” or larger diameter blade is suggested.  Blades should be lubricated with cutting oil or paraffin to reduce heat build-up and facilitate cutting.