Drill Service (Horley) Ltd Contact sales on sales@drill-service.co.uk or call +44 (0)1293774911 DCSF - Carbide Drill, Straight FluteSolid Carbide Straight Flute Drills
Tolerance: Diameter +.000mm / -.008mm Point angle +/- 1° Straight flute drills cannot be satisfactorily bushed and are therefore supplied in stub length only for rigid concentricity. The point is notched to reduce drilling pressure and the lands relieved to prevent scuffing. Swarf that does not break up will not clear. Straight flute drills do not jag at exit. Speeds of about 25-50 m/min are usually used . Use flood coolant and steady feed. Do not dwell or allow swarf to get under the cutting edge when relieving to clear. Old stock manufactured by Carbro (Starlite) - new supplier ULTRA TOOL both from the USA
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