Watch this video to get a step by step demonstration how the Tormek drill bit attachment works and how you can create a 4-facet point.
Alan Holtham, English woodturner and journalist, shows the Tormek sharpening attachment for drill bits DBS-22.
The drill is mounted in a Drill Holder (3) on a Guide (2), which in turn runs on a Base (1).
From the left: Base Plate, Guide and Setting Template.
From the left: Drill holder, Magnifier, Instruction.
If the efficiency of the grindstone decreases during sharpening, you can easily re-active it by using the coarse side of the Tormek Stone Grader SP-650. It brings new grinding grains into operation and increases the efficiency of the stone. The Stone Grader can be especially useful when grinding thicker drills which have a large grinding area.
With the Tormek Drill Bits Sharpening Attachment DBS-22 you can now sharpen your drill bits with the highest precision. The optimal point can be set according to each drilling requirement, which depends upon the drill size and material. You can completely restore worn drills as well as broken drills to a perfect shape.
You create a 4-facet point which gives the ideal cutting performance since the chisel edge gets a point instead of being almost flat as on many drills. A 4-facet point will not walk and the thrust force required is considerably reduced compared to a conventional cone point drill.
A precision sharpened 4-facet point generates less heat and the life of the drill is therefore also prolonged. Independent tests show that a Tormek sharpened drill lasts up to 4 times longer than a brand new conventional drill bit¹.
By working with the laws of physics and cooling the edge continuously, the risk that the steel becomes overheated and loses its hardness or gets micro cracks is eliminated. You have full control all the time and can see how the sharpening proceeds. Read more about drill bit sharpening with DBS-22.
¹ Uddeholm Tooling AB, 2010. 15 mm deep holes were drilled in toughened steel with 6 mm drills. With rotation speed 1326 r.p.m and 0.15 mm feed per rotation, the Tormek sharpened drills lasted on average 327 holes while the new drills with an s-shaped point lasted 72 holes.
Patent No. US 8425277, EPO Patent pending.
RU 2459693, AU 2009263039.