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slot head tuner install

Posted: Thu Mar 07, 2013 4:46 pm
by Dave Bagwill
How do you guys drill holes for your slot head tuners? Got pix of jigs etc?

Re: slot head tuner install

Posted: Thu Mar 07, 2013 5:15 pm
by Dan Pennington
Here's a jig and process I adapted from uke maker Pete Howlett's youtube video.
The three dowels are press fit in the holes.

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The Martin shaped peg head fits this way.

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Grip the side dowels and the peg head in your vise. Rout the slot with a plunge router and a collar.

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Tap the dowels through to the other side.

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Again clamp the dowels and peg head into your vise. And rout the other slot.

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Produces balanced slots.

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Re: slot head tuner install

Posted: Thu Mar 07, 2013 5:18 pm
by Dave Bagwill
That's straightforward and repeatable. Thanks Dan.

Do you also have a fixture for drilling the tuner holes? Drill press/power drill or...?



edit: just found the attached pic on the web - how does it look to you guys?

Re: slot head tuner install

Posted: Thu Mar 07, 2013 5:39 pm
by Dan Pennington
I use this dowel jig from StewMac. And a hand drill.
And I forgot to mention and emphasize: DRILL THE TUNER HOLES BEFORE YOU ROUT THE SLOTS!!
Or you'll blow out wood on the inside of the slots - difficult to repair.
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Re: slot head tuner install

Posted: Thu Mar 07, 2013 9:03 pm
by Dave Bagwill
In this case the slots were pre-drilled, so I will take precautions with an eye to tear-out. In the past I've build various little ad-hoc jigs to get the forstner bit lined up, but I need something better for my students to use.
Hoping to avoid another expense, though. The jig I posted above would help with tear-out.



Anybody else want to share a method?

Re: slot head tuner install

Posted: Thu Mar 07, 2013 9:24 pm
by ken cierp
Here's my fixture -- drill bushings, spacer and back up board

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Re: slot head tuner install

Posted: Thu Mar 07, 2013 9:29 pm
by Dave Bagwill
And the bushings are just a HF type of item?