How To Grind a Drill Bit For Brass?
#21
Hi

I know that in the engineering company that I work for some drills are ground to 90 degrees to use for contersinking holes as most countersunk pins are 90 degrees. Most of the countersunk rivets ( pop rivet type) are at 120 degrees and sometimes drills are ground to suit - usually smaller drills up to about 8.00 mm. We sometimes get drawings with different angles for countersinks I have seen 80 degrees asked for but I`m not sure what fasteners are at that angle.
I`m not sure how different the drills are ( other than the angle of course) from a normal 118 - 135 type - maybe Tom could give us some guidlines/video for countersink drills?

Cheers

Paul
paulmo101, proud to be a member of MetalworkingFun Forum since Jul 2013.
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Messages In This Thread
How To Grind a Drill Bit For Brass? - by EdK - 08-30-2013, 04:12 PM
RE: How To Grind a Drill Bit For Brass? - by TomG - 08-30-2013, 04:38 PM
RE: How To Grind a Drill Bit For Brass? - by TomG - 09-01-2013, 12:33 AM
RE: How To Grind a Drill Bit For Brass? - by TomG - 09-01-2013, 09:32 PM
RE: How To Grind a Drill Bit For Brass? - by LJP - 09-02-2013, 06:10 AM
RE: How To Grind a Drill Bit For Brass? - by EdK - 09-02-2013, 09:58 AM
RE: How To Grind a Drill Bit For Brass? - by EdK - 09-02-2013, 10:20 AM
RE: How To Grind a Drill Bit For Brass? - by EdK - 09-02-2013, 10:45 AM
RE: How To Grind a Drill Bit For Brass? - by TomG - 09-02-2013, 11:18 AM
RE: How To Grind a Drill Bit For Brass? - by EdK - 09-02-2013, 01:16 PM
RE: How To Grind a Drill Bit For Brass? - by paulmo101 - 09-02-2013, 12:41 PM



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