Looking for unusual size forstner bit(s) - Woodworking Talk - Woodworkers Forum
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post #1 of 10 Old 04-03-2019, 06:03 PM Thread Starter
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Looking for unusual size forstner bit(s)

In order of desire, I'm looking for a 10.5mm forstner bit. Second choice is a slightly wider 27/64. Third choice is a 11mm. Having some trouble finding these sizes online. Many thanks for any sources of these sizes. I'm in California.

Thanks!
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post #2 of 10 Old 04-03-2019, 09:23 PM
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Would a brad point work:

https://www.amazon.com/STEELEX-PLUS-.../dp/B017VUQ7TO

“Everything we hear is an opinion, not a fact. Everything we see is a perspective, not the truth.”
― Marcus Aurelius
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post #3 of 10 Old 04-04-2019, 10:25 AM Thread Starter
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Thanks Frank.

I'm using these on bamboo. Brad points work pretty well for my purposes. However, forstner bits eliminate any possibility of splintering. I may have to go with a brad point if I can't find these sizes.

Many thanks for the link!
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post #4 of 10 Old 04-04-2019, 12:14 PM
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Here is a 10mm for use in a mill that may be worth a try.
https://www.banggood.com/Tideway-910...r_warehouse=CN

Gary
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post #5 of 10 Old 04-04-2019, 12:34 PM
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I don't believe there is a 10.5 mm forstner bit, 11 mm yes.
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post #6 of 10 Old 04-04-2019, 01:26 PM
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For $10, my local brick-and-mortar sharpener could grind 0.25mm off the radius of an 11mm
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post #7 of 10 Old 04-04-2019, 06:12 PM
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Quote:
Originally Posted by Mujitsu View Post
In order of desire, I'm looking for a 10.5mm forstner bit. Second choice is a slightly wider 27/64. Third choice is a 11mm. Having some trouble finding these sizes online. Many thanks for any sources of these sizes. I'm in California.
Hello Mujitsu,

10.5 mm is a very common size in the "pen craft" world, among others. I understand you are making something with bamboo, and that's what the bit is for?

May I ask what you are making?

If you just google your request, many examples come up. More if you do it in Japanese but then there is shipping to contend with.

As you have learned, bamboo does always drill easily. This is why many traditional crafts use a gimlet or burn the opening they need...

Let me know if I can be of further assistance...
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post #8 of 10 Old 04-05-2019, 01:03 PM Thread Starter
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Quote:
Originally Posted by Jay C. White Cloud View Post
May I ask what you are making?

If you just google your request, many examples come up. More if you do it in Japanese but then there is shipping to contend with.


Thanks everyone.

I am a shakuhachi flute maker and use these bits to drill the holes. I ordered my best 10.5mm bit from a Japanese company called Mejiro. I used it for 20 years but it's time for a new one. They've discontinued it. It was their own design specifically for bamboo. Looks much like a brad point bit. I preferred it to other brad point bits for bamboo. I also prefer forstner bits over conventional brad point. Using a 10mm forstner now but it would be nice to have a 10.5 again. I did find an 11mm forstner online. Pricey shipping but I may end up doing that. Thanks for the idea of searching in Japanese. Duh! Didn't even consider that!
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post #9 of 10 Old 04-05-2019, 05:56 PM
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If you can't find a replacement, have you considered taking your existing bit to a professional sharpener? Can it be resharpened?
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post #10 of 10 Old 04-05-2019, 08:41 PM
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Quote:
Originally Posted by Mujitsu View Post
...I am a shakuhachi flute maker and use these bits to drill the holes...
That is so wonderful...!!!...

I'm very please you have joined this community of reader and woodworkers.

尺八 (Shakuhachi) are one of the most beautiful flute styles in the world to me...Not only in the sound they make but the simplistic nature of there formation and acient tradition. I have worked to their subtitle harmonics many times over the years while working...

Even there name, which may be of interest to some of the readers here is interesting in light of some current post thread topics...I'm sure you know all the following, but I'm certain some of the other readers here would enjoy the bit of the history...

"Shaku" is the unit of measure I mention early in a thread on Japanese joinery and the the other "kanji" "Hachi" is simply the number "8"...!!!...So basically a piece of bamboo about 1.8 feet long...or...If you translated it literally into English the name of the flute is:

1.8'

The simple name is another reason this is called the "monk's flute" as it was (is) often played by Zen Monks and Shaolin Monks as well since its origins are over 4000 years old from China...

Finding your 10.5mm bit...

I found 3 sources for a 10.5 mm bit like your looking for the first time I looked...You should be able to do the same. Please send me an email if you are having difficulty as they are common in Japan too...

And, more importantly, as Tool Agnostic pointed out most correctly they are easily sharpened by professionals. I would even suggest that you learn to sharpen them yourself as a "maker." I sharpen most of everything I work with accept where time just does not afford me the luxury...Too much to do...LOL...

A set of small file (metal and/or diamond) should maintain it well for you for some time to come.

Again, please let me know if you can't find one...Remember...10.5mm is common in the "pen makers" world of turning...

Good Luck!!!
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