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| =====<div class="buyers-guide">DT Online Buyers' Guide</div>=====
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| [https://en.wikipedia.org/wiki/Drill_bit#Center_and_spotting_drill_bits '''Centre Drills'''] ''(aka Slocombe Drills)'' were designed to provide a location for a '''Tailstock Centre''' ''(hence their 60deg point angle)'' but are commonly used to make a small starting indentation to guide further drilling in a '''Lathe'''.
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| * If used only to start a drilled hole then one or two of the [https://en.m.wikipedia.org/wiki/Drill_bit_sizes#Center_drill_bit_sizes mid-range sizes] will suffice since it is only the tip of the '''Centre Drill''' that will be used.
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| * Choose only those made from good quality [https://en.wikipedia.org/wiki/High-speed_steel High Speed Steel] and offer them carefully up to the workpiece whilst it is rotating since the smaller sizes in particular, can break easily.
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| * Both larger and smaller sizes than the individual drills illustrated are available, but those shown will cover most work in '''Design and Technology'''.
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| * '''Model Engineers''' however, may wish to choose a set of the smaller sizes to suit to suit their more detailed precision work.
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| {|
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| | <dtamazon product="B00AW8372S" type="image">Dormer A200 HSS Centre Drill 3.15mm x 0.80mm</dtamazon>
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| | <dtamazon product="B0001OZQLS" type="image">Dormer A200 HSS Centre Drill 4.00mm X 1.60mm</dtamazon>
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| | <dtamazon product="B0001OZQM2" type="image">Dormer A200 HSS Centre Drill 6.30mm X 2.50mm</dtamazon>
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| | <dtamazon product="B0001OZQMC" type="image">Dormer A200 HSS Centre Drill 8.00mm X 3.15mm</dtamazon>
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| | <dtamazon product="B00AWAX8PM" type="image">Dormer A200 HSS Centre Drill 10.00mm x 4.00mm</dtamazon>
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| | <dtamazon product="B00T6D6RXQ" type="image">RDG Tools 12 piece set of small size centre drills</dtamazon>
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| | <dtamazon product="B00AW8372S" type="text">Dormer A200 HSS Centre Drill 3.15mm x 0.80mm</dtamazon>
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| | <dtamazon product="B0001OZQLS" type="text">Dormer A200 HSS Centre Drill 4.00mm X 1.60mm</dtamazon>
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| | <dtamazon product="B0001OZQM2" type="text">Dormer A200 HSS Centre Drill 6.30mm X 2.50mm</dtamazon>
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| | <dtamazon product="B0001OZQMC" type="text">Dormer A200 HSS Centre Drill 8.00mm X 3.15mm</dtamazon>
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| | <dtamazon product="B00AWAX8PM" type="text">Dormer A200 HSS Centre Drill 10.00mm x 4.00mm</dtamazon>
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| | <dtamazon product="B00T6D6RXQ" type="text">RDG Tools 12 piece set of small size centre drills</dtamazon>
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| |}
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| | {{Centre Drill Buyers Guide}} |
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| [[Category:Drilling and Boring]] | | [[Category:Drilling and Boring]] |
