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Permalink Reply by Ab Wilkinson on September 11, 2015 at 12:38pm

Oops here are pics

Attachments:

• image.jpg, 1.4 MB

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Permalink Reply by jawbone on September 12, 2015 at 5:29am

Hey Ab - with a rod you need to get good contact on top of the rod - the glue may absorb too much vibration.

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Permalink Reply by Ab Wilkinson on September 11, 2015 at 2:38pm

Seems like only one file at a time is attaching...

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• image.jpg, 1.7 MB

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Permalink Reply by Greg Thompson on September 12, 2015 at 1:44am

I have never worked with a rod piezo, but maybe the trouble is not with gluing it to the key, but something more simple. Test the piezo before gluing. I've worked with piezo disks and they glue to anything and work for me. Perhaps a bad solder joint/connection is the answer.
Good luck

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Permalink Reply by Will King on September 12, 2015 at 7:31am

Cut the rod slot so that it sticks up about 1/2 of it's thickness (1/16th inch) above the wood.  Small amount of hot glue in the slot, push the rod in, add a little more hot glue over the top and press the key over the top exactly where you want it.  When you put the strings on, it will depress the key and the humps on the rod and give you the pressure that you need to get a big sound.  Use only a dab of hot glue.  As Greg says, test first!

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Permalink Reply by Randy S. Bretz on September 12, 2015 at 10:43am

Here take a look at some of my rod bridges...might give you some ideas. Must remember...the rod needs direct pressure on the top, such as a saddle to work right. ...http://www.cigarboxnation.com/photo/photo/slideshow?albumId=2592684...

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Permalink Reply by Goldsmithexile on September 12, 2015 at 10:46pm

I use these quite a bit before I used recycled wall warts. I put them flat on the soundboard with a piece of metal or hard wood such as oak between the pikup and the strings. Nothing but string tension to hold them down. The disc piezo is glued inside a cap from a pasta sauce jar

https://youtu.be/YI2AB-z8egI

This is the diddley bow recorded with drums/bass

https://youtu.be/obNYj1-_qqk

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Permalink Reply by Randy S. Bretz on September 13, 2015 at 3:26am

Never use glue with a rod piezo !!!!!...the rod should just slip in the bridge base slot and the saddle should just be snug in the slot on the top of the rod.

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Permalink Reply by David McQueen on September 13, 2015 at 8:57am

I tried to link to one of my pics. The link wouldn't work.

It is a fretted bridge with a 1/8" rod piezo slot on the bottom. The rod piezo just reaches below the bottom of the bridge and rests on the top of the guitar. Nothing is glued.

If you go to my pics, I think it is the latest one.

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