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 Post subject: Bridge Slot Routing Jig
PostPosted: Thu May 10, 2018 5:15 pm 
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Joined: Wed May 23, 2012 6:05 pm
Posts: 12
I'm building a Bridge Slot Routing Jig similar to the StewMac one.

First project where I will use both my Laser Cutter and CNC router!!!

Does anyone have this jig? I'm wondering how the 1/4 20 studs are secured into the base.

I see a couple of ways I could do it:
1. Use threaded rod and thread the base
2. Use a 1/4 20 bolt and relieve the base to accept the head (possible chance of scratching the guitar top when using the jig)

Any thoughts out there?

Derek


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PostPosted: Fri May 11, 2018 4:18 pm 
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Joined: Fri Mar 03, 2006 7:09 pm
Posts: 5562
Location: Hegins, Pa
I do have this
email me at tippie@epix.net
we may be able to do some business

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John Hall
Blues Creek Guitars Inc
Authorized CF Martin Repair Center
Board of Directors of Association of Stringed Instrument Artisans
http://www.bluescreekguitars.com


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PostPosted: Sat May 12, 2018 7:47 am 
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Joined: Fri Mar 03, 2006 7:09 pm
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Location: Hegins, Pa
here are some pics there are no threads in the plastic they used a flat head with a knurled nut
I do have those by the way

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John Hall
Blues Creek Guitars Inc
Authorized CF Martin Repair Center
Board of Directors of Association of Stringed Instrument Artisans
http://www.bluescreekguitars.com


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PostPosted: Fri May 18, 2018 8:08 pm 
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Joined: Wed May 23, 2012 6:05 pm
Posts: 12
Well it took a bit of doing, but I'm happy with the results.

Did it all on the laser cutter with some post ops at the drill press and router table.

Fits well on everything from a Jumbo to an OM.

I'm using a dremel with the SM attachment so I created a plate for it to match to the jig.


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PostPosted: Sat May 19, 2018 7:21 am 
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Joined: Fri Mar 03, 2006 7:09 pm
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Location: Hegins, Pa
I am interested in a couple

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John Hall
Blues Creek Guitars Inc
Authorized CF Martin Repair Center
Board of Directors of Association of Stringed Instrument Artisans
http://www.bluescreekguitars.com


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PostPosted: Sat May 19, 2018 10:58 am 
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Joined: Mon Jul 28, 2014 7:50 am
Posts: 503
Location: Chadds Ford, PA
lyricalgeek wrote:
...Fits well on everything from a Jumbo to an OM.....


Does it fit on a 00-14? What is the window on the tail end for? If you supply John (tippie53) with some let us know.


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PostPosted: Sun May 20, 2018 5:50 pm 
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Joined: Wed May 23, 2012 6:05 pm
Posts: 12
If you send me the dimensions from the bottom of the sound hole to the front of the bridge and from the rear of the bridge to the tail of the guitar I can tell you if it will fit an 00-14. I may scale the current design a little anyway to make it fit smaller guitars a little better without so much hanging off the body.

The bottom "window" is actually a plate that you can bump up against the router guide. If your bit is smaller than the width of your saddle slot you can carve the leading edge of the slot then move the plate back the distance using a feeler gauge. Then you can back the router guide up against it and it will keep the alignment correct while allowing you to carve a wider slot.


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PostPosted: Mon May 21, 2018 6:25 am 
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Joined: Fri Mar 03, 2006 7:09 pm
Posts: 5562
Location: Hegins, Pa
this will fit
you can clamp at the sound hole and along the rims if you have to but it looks like it will hit the tail block fine

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John Hall
Blues Creek Guitars Inc
Authorized CF Martin Repair Center
Board of Directors of Association of Stringed Instrument Artisans
http://www.bluescreekguitars.com


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