Centre Drill Buyers Guide: Difference between revisions
From DT Online
(Cretaed Template) |
No edit summary |
||
(One intermediate revision by the same user not shown) | |||
Line 1: | Line 1: | ||
{{Buyers Guide Heading}} | |||
[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'''. | [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'''. | ||
* 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. | * 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. | ||
* 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. | * 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. | ||
{| | {| | ||
|- | |- | ||
| | | style="padding: 10px;"|<dtamazon type="search" search="Slocombe Centre Drill"><img src="https://m.media-amazon.com/images/I/51JSDrLzEWL._AC_UL320_.jpg" alt="Slocombe Centre Drill"></dtamazon> | ||
| <dtamazon | |||
|- | |- | ||
| | | style="padding: 10px;"|<dtamazon type="search" search="Slocombe Centre Drill">Slocombe Centre Drill</dtamazon> | ||
| <dtamazon | |||
|} | |} |
Latest revision as of 17:47, 14 February 2021
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.
- If used only to start a drilled hole then one or two of the mid-range sizes will suffice since it is only the tip of the Centre Drill that will be used.
- Choose only those made from good quality High Speed Steel and offer them carefully up to the workpiece whilst it is rotating since the smaller sizes in particular, can break easily.
Slocombe Centre Drill |