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Unread 11-03-2010, 18:16
sanddrag sanddrag is offline
On to my 16th year in FRC
FRC #0696 (Circuit Breakers)
Team Role: Teacher
 
Join Date: Jul 2002
Rookie Year: 2002
Location: Glendale, CA
Posts: 8,501
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Dull drill bits - throw them out

I figured I'd share this quick story to perhaps help prevent someone else from doing what I accidentally did. I've drilled thousands of holes over the last 10 years, but until last night, not a one of them was drilled through my hand.

A student was drilling a 3/16" hole in a piece, and having some trouble with the drill bit not cutting very well. Wondering what was up, I said "here, let me see it" and took over the job. Indeed the drill bit was dull. Thinking it would still work fine, I pushed a bit harder (big mistake). Drill bit snapped, and drill slipped, shifted over and punched right into my hand between the thumb and index finger. About a 3/8" deep torn-up puncture wound, requiring stitches. I was lucky it hit an area without any bones or tendons.

Now, when I find a dull drill bit, I throw it out. It's not something I will allow in my shop anymore. Drill bits are cheap. Using a dull one simply isn't worth the risk of snapping it.

So, as a reminder to all teams, keep your tools and equipment in good and safe operating condition. And any time you apply a significant force to something (by hand or any other means), think of what would happen if the opposing force suddenly disappeared.

I've operated a lot of large and dangerous machinery over the years, and sometimes its the simple things you do every day that will end up hurting you.
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Teacher/Engineer/Machinist - Team 696 Circuit Breakers, 2011 - Present
Mentor/Engineer/Machinist, Team 968 RAWC, 2007-2010
Technical Mentor, Team 696 Circuit Breakers, 2005-2007
Student Mechanical Leader and Driver, Team 696 Circuit Breakers, 2002-2004
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