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Isolating the piezo

Hello, new here.

Ok, I just went and bought some cork sheeting, about 1/8" thick, and put a layer of it on my cbg, with little noticeable affect on scrape sensitivity, etc.

I have an acoustic box (top floats freely), cork layer, maple bridge layer, hollowed out underneath, rod piezo, wenge layer with slot cut out to partially accommodate rod piezo (it sits on top of the rod, but the slot if not deep enough to let the wenge lie flat on the maple), then a threaded rod for the saddle.

I still hear any little rustle and scrape of the guitar body. Possibly the feedback is less, but I was hoping for a lot more isolation. Any suggestions? Cork above and below the rod?

I also have this running through one of those little preamps that cbgitty sells.

Tags: cork, isolation, piezo, preamp

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Replies to This Discussion

Permalink Reply by Randy S. Bretz on April 14, 2012 at 10:06am

Custom rod piezo bridges with bone or buffalo horn saddles

Permalink Reply by Wade on April 14, 2012 at 7:00pm

Beautiful work as always Randy. I have been holding onto one of your bridges and waiting for the right build to come along. I gotta stop hoarding all my good parts and start using them!

Permalink Reply by rusty case on August 22, 2012 at 4:44pm

Beautiful works of art, Randy!

I recently tried a rib bone scrap that has aged out in the yard, apparently for over a year... :-)

I cut away the spongy part inside, and used the harder outer part of the bone.

Sounded poor.

I switched over to a small chunk of hardwood, and the sound improved dramatically.

Must the bone be stabilized, before use, somehow?

Oh, I'm trying this on a Dbo, with the bridge on a resonator can.

Tnx

Oh, we're isolating piezos in this thread... yesterday at dollar store I saw a 8" spongy rubber disk thingy for use as a jar-top grabber to open them slippery puppies.

Kinda wondered how it might work, kinda like cork, to isolate a piezo???

I got a few piezos hanging around, scavenged from diferent things that I shall try soon as I read through this group.... :-)