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 Post subject: Re: redwood 00
PostPosted: Tue Jul 28, 2020 5:45 pm 
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Joined: Thu May 24, 2012 8:03 am
Posts: 1391
Location: Chestertown Maryland
If you are doing a non-pyramid bridge, the first couple of jigs will still be handy. Here is a Brazilian Rosewood bridge I made for a 1933 Gibson L-00 that was shattered and that I rebuilt. The saddle wasn't cut to length in this picture, and I wish I had the pin hole and the saddle slot jig earlier for this one. There are many designs for both of these jigs and I did ones that made sense to me and the number of bridges I will ever make.


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 Post subject: Re: redwood 00
PostPosted: Thu Jul 30, 2020 8:43 pm 
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Joined: Thu May 24, 2012 8:03 am
Posts: 1391
Location: Chestertown Maryland
1) Time to locate the bridge. I made a fixture that lets me bump the installed saddle up against it, center and square it, and off you go. Here is the nut end - it just hooks over the nut slot

2) This is the business end - I made it for a 24.9" scale and am using the convention that is confirmed by the StewMac fret locator calcs. Confirm the scale by measuring nut to twelfth fret on the actual fretboard, double to get scale length, add .1 inch to compensate the high e, then angle the saddle 3°, or 1/8" from e to E. Then subtract 1/2 the thickness of the saddle blank - 1/16" for an 1'8" saddle - to put the point of string contact in the center of the saddle - make the fixture that long. Now when I bump the saddle against it, the bridge is in the right place

3) Except that this time I am using a 25.4" scale. I added a .44 (if I recall) extension to the fixture and now it works for my new scale


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Last edited by ruby@magpage.com on Tue Aug 11, 2020 12:47 pm, edited 1 time in total.

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 Post subject: Re: redwood 00
PostPosted: Thu Jul 30, 2020 8:49 pm 
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Joined: Thu May 24, 2012 8:03 am
Posts: 1391
Location: Chestertown Maryland
1) Clamp it on and center it . . . .

2) Center the bridge side to side and begin to tape it down. . . .

3) Check for square against the center seam, tape the heck out of it. . . . .


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 Post subject: Re: redwood 00
PostPosted: Thu Jul 30, 2020 8:54 pm 
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Joined: Thu May 24, 2012 8:03 am
Posts: 1391
Location: Chestertown Maryland
1) and drill the outer two holes

2) Painful alert - we will never speak of this again. I positioned the bridge with the wrong side of the saddle against the jig. I found it when I shined a light down from the top and checked with a mirror inside to be sure I hit my bridge plate - I didn't

3) With a piece of sandpaper on the top, I arch the bottom of the bridge to match the top curvature. Ready for finish (except for patching 2 holes in the top!!!! GAHHH)


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 Post subject: Re: redwood 00
PostPosted: Fri Jul 31, 2020 6:38 am 
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Joined: Tue Jan 17, 2012 12:38 am
Posts: 85
Location: Seattle
I have a top with 2 holes in almost the same place, for the life of me I don't know how it happened, needed 2 extra pegs for that guitar.


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 Post subject: Re: redwood 00
PostPosted: Tue Aug 11, 2020 10:56 am 
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Joined: Thu May 24, 2012 8:03 am
Posts: 1391
Location: Chestertown Maryland
1) I couldn't find a 3/16" plug cutter, so I turned to my telescoping cork gasket cutter, graduate in 1/16th's. I used the 1/4" first in the scrap top wood to give some clearance, then just twisted the sharpened 3/16" tip down til I got a plug . A little big, but a touch to sandpaper made it fit well

2) Now sanding - you all know the drill. I finished with 220 like Martin does in these woods


So now for finishing. I don't have spray equipment, so I hand polish and am looking for the right finish for my "talents". I have used water based KT-9 (no longer made), water based EMT 6000, TruOil, Minwax Wipe on Poly, shellac, and I've had 2 professionally sprayed with Nitro and buffed. Nothing I am in love with - but that may have changed. I am trying Endurovar and so far I LOVE IT. We'll wait to see how it polishes.

3) No shots of brushing Endurovar. I put on 8 coats in 8 hours, each time brushing across the last coat to even things out a bit. Then I dragged some 220 over surface to get rid of the big stuff, and sanded with 320 until I had just a few shiny spots left. Only sanded through in 2 spots on the neck, so I am confident with the next round of 3 coats that I will be able to sand smooth and polish. You can see the unsanded area at the bottom of the shot


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Last edited by ruby@magpage.com on Tue Aug 11, 2020 12:51 pm, edited 2 times in total.

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 Post subject: Re: redwood 00
PostPosted: Tue Aug 11, 2020 11:03 am 
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Joined: Thu May 24, 2012 8:03 am
Posts: 1391
Location: Chestertown Maryland
1) Endurovar is easy to brush on and sands extremely easily. Sandpaper used dry lasts forever and it takes just a few minutes to level. As in the last shot, you can see how far I went, leaving just a few shiny spots

2) And you can see how the extra holes look with their plugs. One is almost completely gone, and the other will be fine once the distraction of the strings is in place

3) I managed to sand through along this edge and one small other area of the neck. A few coats and a more careful sanding, and ready for the last 3 coats - total of 11 feels good. #9 is coming along!!


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