The Murphy Builders Site

Actually, I did start small (#30) and it went fine initially. Once I got to 9/32
though, halfway through the hole, it just stopped moving and started grinding.

Rob



On 8/30/2010 8:55 AM, rwampach@att.net wrote to rebel-builders:

-> Oh, Oh! So did you try to drill a big hole all in one pass? Try a small
-> diameter carbide # 40 or so, slow turning, heavy pressure, cutting oil, &
-> don't side load the bit to break it. Good luck
->
-> Dick Wampach SR-108 N331RW
->
->
->
-> -----Original Message-----
-> From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of
-> schaumr@dcsol.com
-> Sent: Monday, August 30, 2010 9:19 AM
-> To: rebel-builders@dcsol.com
-> Subject: [rebel-builders] Drilling through steel leaf springs:
-> work-hardening
->
->
-> Hi All,
->
-> Tried to drill through my steel tail spring this morning but managed to
-> render
-> half the hole "work-hardened" (not enough lube and/or cooling). What do
I
-> do now? Carbide tipped bits? Other bits?
->
-> Hope someone can help me avoid buying a new tail spring!!
->
-> Rob
-> Rebel 786
->
->
->
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