Subject: Extended pointy set screw ring gear mount in gear box housing
From: "rotaryeng@earthlink.net" <rotaryeng@earthlink.net>
Date: 6/30/2015, 12:47 PM
To: AA-1-Me

Hi Milo,
    How did you get those holes through those hardened pins ? spark erosion ? Do you know how long it took to do each hole ?
    Cheers Chris in NZ



Chris, I tried my carbide drills and they had no problems cutting the hard steel gears.
It all has to do with the exact  brand of carbide drill.
I used Rodman & Company Inc  carbide and cobalt tip. Chrome Vanadium Steel Shank.Made in Germany.

They have an sales office here in LA.

Let me know if you get this Chris as I have been having trouble with
earthlink.


Paul Lamar


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