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Robbie O'Brien
PostPosted: Sun Jan 17, 2010 8:30 pm 
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Brazilian Rosewood
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Joined: Wed Jan 19, 2005 5:23 am
Posts: 2356
Location: United States
The newest Luthier Tips du Jour instructional video is on Youtube. The topic is Manual Fret Slotting. Subtitles are available in both English and Portuguese and you can translate them into any other language by using the CC option on Youtube.
As always, comments and discussion are welcome.
Enjoy!
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Pete Brown
PostPosted: Sun Jan 17, 2010 11:06 pm 
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Joined: Mon Dec 08, 2008 11:55 pm
Posts: 145
Location: Perth, Western Australia
Thanks for another great video Robbie.

I have an older version of this tool and the indexing pin supplied is tapered on one end and straight on the other - I've never known why. Can you solve this mystery for me?

Cheers
Pete

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Corky Long
PostPosted: Tue Jan 19, 2010 10:47 am 
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First name: Corky
Last Name: Long
City: Mount Kisco
State: NY
Country: USA
Focus: Build
Status: Amateur
Thanks Robbie!

Another great tutorial.
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Stephen Boone
PostPosted: Tue Jan 19, 2010 11:02 am 
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Very nice!

The children do love to help in the shop. All that cutting can be a drag. It is a good idea to have some apprentice labor for that part!

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Paul Micheletti
PostPosted: Tue Jan 19, 2010 2:07 pm 
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Joined: Fri Sep 19, 2008 10:59 pm
Posts: 102
Location: San Diego CA
Thanks Robbie! I've got that jig since I don't have a tablesaw and have no plans on getting one. I'll be using it soon, so this toot is timely! [clap]
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Antonio
PostPosted: Wed Jan 20, 2010 7:25 am 
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Joined: Wed Dec 03, 2008 10:27 am
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Thank you!
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mnemotorsports
PostPosted: Wed Jan 20, 2010 8:18 am 
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[clap] thanks great vid
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Robbie O'Brien
PostPosted: Wed Jan 20, 2010 3:18 pm 
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Brazilian Rosewood
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Pete Brown wrote:
Thanks for another great video Robbie.

I have an older version of this tool and the indexing pin supplied is tapered on one end and straight on the other - I've never known why. Can you solve this mystery for me?

Cheers
Pete



Pete,
Here is some info that will answer your question.
The older version of the LMI manual fret slotting jig used to use a template for the scale that had horseshoe shaped indentions that the pin would be inserted into. If you used the tapered end of the pin it would fit snuggly in the slot. If you used the straight end of the pin you would have .0125 of slop or wiggle room between the pin and the slot of the template. This would allow you to shift the fretboard and template that amount to compensate when cutting the nut slot. To learn more about compensation you can go here http://www.lmii.com/CartTwo/Intonation.htm

Nowadays the templates all have v shaped indentions cut in them so you want to use the tapered side of the pin. If you use the straight side or non tapered side of the pin it is fine but will eventually wear the template a bit.
Hope this helps.
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Pete Brown
PostPosted: Wed Jan 20, 2010 7:09 pm 
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Joined: Mon Dec 08, 2008 11:55 pm
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Robbie, I've been scratching my head over this for a good ten years, but figured it wasn't a big deal. Thanks for clearing it up once and for all!

Cheers
Pete

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