LMI HEADSTOCK SLOTTING JIG

REVIEW COURTESY OF

LANCE KRAGENBRINK 

http://kragenbrinkguitars.com/index.html

Click on Pic for larger view

Lance was very generous in letting borrow and try out his newly acquired LMI jig even before he has tried it. Thanks Lance!
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Headstock tried it shaped and thicknessed.

Lay out tuning

Center hole locking

 pin removed

Headstock mounted

ready to drill 

center hole first.

 

Masking tape used

 as a depth stop.

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Center hole  drilled

Re-insert center hole locking pin

 

Drill outer two

 holes.

Repeat for

other side.
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 New 1/4" spiral downcut bit. 1"

cutting length

Insert 1/2" o.d.

guide bushing in my 20 year old 690

This leaves me a

.630 w. slot or approx. 5/8"

After 4 passes I'm thru. You could do

it in three
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Guide bushings needed do to 13/32 drill bit for calssical tuners. Bushings are a bit sloppy @ .395 o.d.

Finish and or glue should tighten fit

Looking good Total time about

30 min.. Next one should be faster.
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This jig is very well made. Although it is designed for classical tuners 3/8" d. hole it can be adapted to slot head acoustic machines with larger tuner bushings available from Stew-Mac. It would really be neat if you could change the drill guide bushings or maybe bush the bushings. Is there such a thing? It is an expensive addtion however if you build classical guitars or a lot of slot head steel strings the time saved makes it a worhwhile addition to any luthiers jig collection.                         

 

 

 

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