[quote name='lowregisterhead' timestamp='1365532698' post='2040861']
I had a Synapse a few years ago, and it was just a piece of metal screwed securely into the body at one end, and with a hook at the other end that you hooked your strap onto. Simple enough, and it did work, but it always felt slightly unstable to me. How about a small bag of lead weights hung from the strap button at the bridge end? Cheaper than $39.99 plus shipping and duty from the States for a bit of tungsten steel!
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Thank you. I guessed as much but was never sure.
I've wondered about the use of a perspex plate to add mass to the body. Attached to back of body using cover-plate screw and an extended neck screw; should add mass invisibly and reversibly, and without altering the feel of the bass much. Obviously this would work only for flat-backed bodies. I did buy a slab of plastic (when I bought mcnach's Shine ASAT-alike) but never got round to shaping and fitting it.