Where to locate hard to find Forstner Drill Bits?

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Blog entry by bluegrassstate posted 09-02-2008 04:07 AM 9980 reads 0 times favorited 8 comments Add to Favorites Watch

Many thanks to all forum members that have welcomed me on board..that much fellowship has never been received from any of the many other forums I frequent..I do have one question…I’m having a difficult time finding a source for two (2) hard to find forstner drill bits…I’m in desperate need of a forstner drill bit in size 13/32” and 33/64”....any suggestions as to where I might be able to find either or both? all help will be greatly appreciated…thanks from the bluegrassstate..

8 comments so far

View Karson's profile


35120 posts in 4396 days

#1 posted 09-02-2008 04:51 AM

These people say if they don’t have it they will make it.

Advantage Drillbits.

-- I've been blessed with a father who liked to tinker in wood, and a wife who lets me tinker in wood. Southern Delaware soon moving to Virginia †

View tenontim's profile


2131 posts in 3740 days

#2 posted 09-02-2008 04:54 AM

Good luck. I don’t think I’ve ever seen Fortner bits in that small an increment. You may have to go with a metric bit, which a 10mm and 13mm are the closest.

View hObOmOnk's profile


1381 posts in 4123 days

#3 posted 09-02-2008 03:28 PM


You didn’t state your context or tolerances, so here’s some ideas.

Lee Valley has a good selection of Forstner Bits in both Imperial and Metric sizes, but none exactly to your requirements. You might want to think about re-working a slightly larger size, either on your own or take them to a machine shop.

  • The 13/32” size calculates to 10.3mm. LV has a 12mm size that you could re-work. Also, LV has a 7/16” size that calculates to 11.11mm size that you could re-work.
  • The 33/64” size calculates to 13.1mm. LV has a 14mm size that you could re-work.

Just a thought…

-- 温故知新

View Bob #2's profile

Bob #2

3809 posts in 4017 days

#4 posted 09-02-2008 06:09 PM

Just being nosey, but why do you need them?


-- A mind, like a home, is furnished by its owner

View bbqking's profile


328 posts in 3719 days

#5 posted 09-02-2008 10:38 PM

I’m with Bob #2.

-- bbqKing, Lawrenceville

View bluegrassstate's profile


2 posts in 3552 days

#6 posted 09-03-2008 05:56 PM

I install medallions on pistol & revolver aftermarket grips from several different manufacturers..two of the most popular one’s are from Smith & Wesson and Colt…standard procedure is to drill with the closest sized forstner drill bit I have available and ream the opening to fit the two sizes I need, which are 13/32” and 33/64”..I would like to find forstner drill bits for the exact size needed to make for a better and much easlier fit…I’ll check with the supply companies provided by the forum members and try to find exactly what I need..once again, thanks for all who have responded to my posting…from the bluegrassstate..

View shaneasa's profile


4 posts in 3369 days

#7 posted 03-04-2009 05:04 AM

Just joined, may be late in the game for you, but if you need them, and I DO see your reasoning, if you have a tool making friend, or a company around you that does tool grinding, they should be able to grind a small forstner bit to exact size, or even make a custom one. They can even be made from regular drill bits, cut short (for added strength), ground flat for a nice even, flat fit for your medallion. With a little hand grinding, you can relieve the cutting edge to allow for a nice cuttingland. Sadley if I had more time, I could make them for little cost. I love tool making!

View John Gray's profile

John Gray

2370 posts in 3881 days

#8 posted 03-05-2009 06:56 AM


-- Only the Shadow knows....................

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