Carbide Countersink Drills with Low-Friction Depth Stop - Lee Valley Tools
When the stop collar stops spinning, the hole is complete. Anti-Clog Debris Cavity. The Smart-Bit debris cavity gathers waste material, keeping it clear of the countersink, unlike conventional flush mounted countersinks. The waste simply falls out onto the deck surface after each hole is completed. Powerbolic® High-Speed Drill Bit. Countersink drill bit set features. Sets contain between three and seven countersinks, giving you an enormous range to choose from. All-in-one sets: These should also contain a hex key, which is used to adjust depth stops or replace worn pilot drills (the countersink part tends to last much longer).Sometimes two hex keys are provided, which is great because it’s easy to lose one! There’s no need to ram that countersink down into the workpiece until the depth stop bangs to a stop. All that will get you is a marred surface. And if you don’t stop drilling soon enough, the spinning depth stop can easily burn the wood surface to boot yet another reason to avoid high-speed countersinking.

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