[Woodwind] Tone hole Cutter

Hi !
Here is a very specific tool made for shaping the top of a tone hole chimney.
This is for tone holes that will be covered by a key. It is crucial that the pad of the key has a neat contact with the wood in order to avoid any leakage.
The contact surface is actually reduced to a single ring if the tone hole has a slightly spherical top.

Here is what we want to obtain :
http://www.labellenote.fr/file/homem..._tool_0010.jpg

And here is how it is done :
First, a guiding pin is turned down, given the diameter of the tone hole.
And then a custom ground shaping tool is used to cut the spherical shape of what will be the cutting edge.
http://www.labellenote.fr/file/homem..._tool_0001.jpg

Then I use my milling attachment to drill 6 transversal flat bottom holes with a small carbide end mill cutter.
http://www.labellenote.fr/file/homem..._tool_0002.jpg

This will form cutting teeth
http://www.labellenote.fr/file/homem..._tool_0003.jpg

http://www.labellenote.fr/file/homem..._tool_0004.jpg

Then I use a cutting disk on a Dremel to grind down the back of each tooth.
http://www.labellenote.fr/file/homem..._tool_0005.jpg

http://www.labellenote.fr/file/homem..._tool_0006.jpg

Here I'm using my transversal drilling attachment on the lathe with this tool.
http://www.labellenote.fr/file/homem..._tool_0007.jpg

Close up
http://www.labellenote.fr/file/homem..._tool_0008.jpg

http://www.labellenote.fr/file/homem..._tool_0009.jpg

Finished Job
http://www.labellenote.fr/file/homem..._tool_0010.jpg

Looks like it worked !

Doug

WOW, thanks for all of your post, fascinating work.

Ralph

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Thanks Christophe Mineau! We've added your Tone Hole Cutter to our Woodworking category,
as well as to your builder page: Christophe Mineau's Homemade Tools. Your receipt:

<div id="blocks"> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="http://www.homemadetools.net/homemade-tone-hole-cutter"> <img src="/uploads/215234/homemade-tone-hole-cutter.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="http://www.homemadetools.net/homemade-tone-hole-cutter">Tone Hole Cutter</a> <span> by <a href="http://www.homemadetools.net/builder/Christophe+Mineau">Christophe Mineau</a></span> </div> <div class="tags">tags: <a href='http://www.homemadetools.net/tag/music'>music</a>, <a href='http://www.homemadetools.net/tag/cutter'>cutter</a> </div> </div> </div> </div>
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Hi Christophe,

very nice toolmaking. I plan to make a similar spotfacing tool with a 1.5mm guide pin, to uniform primer flash holes on cartridge cases. The commercial ones are the wrong shape -- just a #2 center drill in a holder-- and can thin the case too much.
Is there a description of the milling attachment on your website?

Paul

Quote:

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Originally Posted by PG1

Hi Christophe,

very nice toolmaking. I plan to make a similar spotfacing tool with a 1.5mm guide pin, to uniform primer flash holes on cartridge cases. The commercial ones are the wrong shape -- just a #2 center drill in a holder-- and can thin the case too much.
Is there a description of the milling attachment on your website?

Paul

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Hi Paul,
Not on my web site, but here on my, yes:
http://www.homemadetools.net/forum/h...1321#post93470

Basically, a spot facing tool.