[TheForge] followup on holes in saw blade

[Ron Childers]

Has anyone tried regrinding a masonry bit to use on really hard meta? 

-----Original Message-----
From: theforge-bounces at mailman.qth.net
[mailto:theforge-bounces at mailman.qth.net] On Behalf Of Peter Fels & Phoebe
Palmer
Sent: Thursday, May 06, 2010 1:25 PM
To: Blacksmithing List Sponsored by ABANA
Subject: Re: [TheForge] followup on holes in saw blade

Andy;
Try a cutting lubricant and regrind your drill flutes to 
a less aggressive angle...also drill a pilot hole 
first......speed and feed matter of course.

Andy Gladish wrote:
> A couple weeks ago I was having trouble drilling holes in some knife
blanks 
> made from surplus metal-cutting bandsaw blades.
> What I ended up doing was heating to critical in the gas forge, then 
> blocking the door, turning it off, and letting it cool slowly.
> Now I can drill them, though I wish the drill didn't chatter and squeal so

> much...
> Thanks for the help, everybody!
> Andy G. 
> 
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