Scribe-Master DG/JIG Draining Groove Jig The Scribe-Master DG/JIG Draining Groove Jig is designed for routing draining grooves in solid timber for Belfast type sinks. With built-in 0.5 fall & Anti-Bow Technology. This well-made Jig is a solid, hard-wearing piece of 12mm thick CNC machined phenolic measuring 585 mm x 600 mm. It features 3 removable sloping runners for support and a cutter-diameter check hole. Does not include cutter or guide bush. The UKs number one name in Woodworking Jigs. Scribe-Master has been manufacturing high-quality jigs for major companies in the woodworking industry for the last eight years. You might not have heard the name, but you will have definitely seen our jigs Features: For routing draining grooves in solid timber for Belfast type & under-mount sinks. Anti-Bow Technology preventing dishing in the worktop preventing water draining Manufactured from exterior grade high density laminate providing precision, strength and durability 3 Jig support runne