Sharpen Bowling Ball Drill Bits

[stephan@blasch.de]

Hi everyone,
I own a Tormek T-4 and look for a way to sharpen the Drill Bits I use for drilling Bowlingballs.
that bits have diameters from 1/2" to 1-1/2", a welded hard metal plate on top and therefore only two angles, the drilling angle with ca. 118 degrees and the angle of the cutting edge of approx. 10 degree. i've attached a foto with one bit.
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do you think, there is an attachment for the Tormek, so i can sharpen this bits easier?

sorry about my bad english, also i don't know the exact techical names of a drilling bit.

greetings from hamburg/germany

Stephan

[John Hancock Sr]

I think that the Tormek drill sharpening attachment DBS-22 should be able to sharpen them. That drill appears to be a "glass" drill bit which is similar to a masonry drill bit bit with a single facet. The masonry drill usually has a double facet.

You will need to experiment with the jig to get the angles correct but once you get it set up it should be much easier to set it up again.

If the tip is tungsten carbide (as it appears to be) then you will need to use the black wheel, CBN or diamond since the SG wheel is too soft for tungsten carbide.

I have been thinking about trying to sharpen my masonry bits but have not gotten around to it yet.

[stephan@blasch.de]

Thank you very much for your answer, when i read it, i noticed, that the body of the drill bits is a lot smaller than the tip.
when i read the infos correct, the DBS-22 ist only able to handle Drill Bits up to 22 mm and all the bits greater 1" have a body that is 24mm to 1" thick.

now i'm thinking about buying the DBS-22 for all the smaller bits 

[John Hancock Sr]

Quite correct. The DBS-22 will not do larger bits. You may able to do them free hand.

[RichColvin]

That looks like a masonry bit.  Not much guidance on these.