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Drill bit / bur selection


#1

I need to drill a 5mm hole in 14 guage sterling silver. I’ve been
looking through Stuller and Rio’s catalogs, but am uncertain which
drill/bur to use. Sawing and hole punching are not an option at
this point in the design. Can someone direct me to the right tool?
Thanks.

Catherine


#2

Catherine,

My handy, dandy pocket reference states that a #9 drill bit has a
diameter of 4.9784mm and a #8 drill bit has a diameter of
5.0546mm. Take your pick!

Linda in warm and sunny MA


#3

Hello Catherine, You can probably find a drill bit the size you want
in a hardware store, but be very careful. A bit that size will easily
grab the piece you are drilling. This is dangerous. I might suggest a
tapered bur instead.

Have fun.
Tom Arnold