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.
Replies
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
rc
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.... :-)
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!
What is that white covering over the bridge...Marcus
Bone...their carved from bone and the saddle is all one piece, i chamber out underneath, apply hot glue, stick in the piezo and cover with hot glue wires and all. No feedback !! Been making these for years now, their one of my best sellers. The tone is in the bone...lol.
piezos worked in as a "sandwich" between the top and the bridge can be feedback proof and very quiet as far as touch/scrape it the piezo is installed with the active side upward toward the bridge (direct contact) and the void of the sandwich filled with something soft like silicone caulk. I tripped across this set up and now use it exclusively when I use piezos.
hope this helps,
Wichita Sam
Sam, Do you cut a groove into say a piece of dowel then lay the rod piezo into the groove then attach it to the base of the bridge. I like a floating bridge to help adjust intonation. Bridge making is one of my weaknesses. I've built about 15 guitars since starting last October and most have turned out pretty well. I'll post some pics on your bridge ideas. I'm sure your right.
Marcus,
I take a bridge plate and hollow out a cavity(s) for the piezo(s) using a fostner bit. I work with thin material (1/4") so it takes some patience to get it right. the piezo(s) is glued to the bridge plate and then the remaining void is filled with silicone caulk. (what you fill the void with is important. It must remain pliable over time). Drill hole in top for leads and glue the bridge plate assembly to top. I use a thin brass rod for the saddle just resting it on the bridge plate to fine tune intonaton. At that point you can groove the plate for position, or flatten the rod slightly for stablize it's location for play....
here's an example
the best,
Wichita Sam
Thanks Sam, I'm going to give it a try. It will be my first rod piezo project. ...Marcus
-
1
-
2
of 2 Next