Replies to This Discussion

Permalink Reply by Wade on December 17, 2014 at 4:03pm

I've had good results using a wood screw as a sound post. Screw it into the neck through under the bridge - it's real easy to move and adjust too.

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Permalink Reply by Bluesheart on December 18, 2014 at 3:50am

Yep, a screw up through the neck to support the bridge was one of the first things that came to mind but the violin type sound post is intriguing too! May try a screw first since it will be easiest.

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Permalink Reply by Wade on December 18, 2014 at 6:07am

The cbgs I did this to seemed to have a more clear tone. I'm not saying better tone-just different.
The good thing is you can crank away on the tuners and not worry about box collapse

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Permalink Reply by Jim Morris on December 18, 2014 at 1:02pm

Well I love a discussion that makes me go out and experiment. I normally don't use cardboard boxes due to their lack of strength. But I wanted to see if my soundpost design would work on a weak topped box. This shows my normal soundpost arrangement but I used a wider based bridge than I usually do and went with a nylon string uke for less tension. I'll give it some time and see what happens. If I see signs of sag I might try a 2nd soundpost on the bass side of the bridge. I'll post a vid of how it sounds in a bit.

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Permalink Reply by Wade on December 18, 2014 at 1:21pm

I usually attached the post/ screw to the carry through - it will be interesting to see if you get more volume from a post attached to the back-similar to a violin.

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Permalink Reply by Jim Morris on December 18, 2014 at 1:43pm

Yeah Wade, I read your earlier post and thought about putting it on the thru piece. I think  that would be better strength wise but this is how I do my fiddles (along with a bass bar on fiddles) and I didn't want to have too many variables to try and judge. You can see where I tried to glue a cross brace on the top but the paper covering pulled away so the experiment continues. Now that I've done a sound test this way I might try the post your way for comparison purposes.

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Permalink Reply by Jim Morris on December 18, 2014 at 1:56pm

http://youtu.be/mRw9dbPFdQQ

Here's the cardboard cb uke with the soundpost.

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Permalink Reply by Wade on December 18, 2014 at 2:12pm

It sounds terrific!

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Permalink Reply by Jim Morris on December 18, 2014 at 3:05pm

Thanks Wade. It's fun sometimes to deviate from my planned builds and just experiment a bit!

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Permalink Reply by Bluesheart on December 19, 2014 at 9:41am

Wonderful job on the uke and the tune Wade!

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Permalink Reply by Bluesheart on December 19, 2014 at 10:08am

SO,I opened up this box last night and messed around with ideas. Then it hit me that the simplest fix was not to fix it at all! The top is already touching the through neck under the bridge which leaves the rest of the surface free to vibrate and the neck is kind of weak and tends to bow a bit so the slightly lowered action from the box crush actually is a benefit. I like to play this one with a slide a lot so the crappy action is again a bonus there. I put on a lower and wider bridge but the break angle is already so shallow that any benefit was lost due to decrease of string pressure on the saddle, so while it made it more playable for fretting, the volume suffered. So I will reshape the top edge of the corian bridge, or maybe try a piece of the bone my dog is chewing next to me and leave well enough alone. It's not like I don't have a dozen or so guitars to choose from if I want to do fingerstyle. It just goes to show that sometimes a "problem" is really an added feature!!

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Permalink Reply by Bluesheart on December 19, 2014 at 10:09am

I meant great job on the tune and uke Jim Morris! 

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