cork sniffers resonator project

[cork sniffer]

Two problems show up today prompting two questions.

I've found the wafer thin bottom of the sound hole has warped (been sitting in a hot room), now the cone doesn't sit correctly, it's resting at two places on bottom.
Given the very thin nature of the material and the cavity between the warped bottom and the ply back of guitar body, is there any reason why I shouldn't use a Stanley Knife and cut the bottom out? This won't weaken the body at all but will make the air volume greater under the cone. Possibly this may give the electric guitar a "slight" acoustic advantage?



The second issue, I assume I'll have to drill a hole through the spider to allow the piezo wire to pass through?
When the piezo sits in the bridge recess I think the wire would have to be bent to an unacceptable level. A hole would allow a less strained cable on it's way to the control cavity.

[FrankenWashie]

Two problems show up today prompting two questions.

I've found the wafer thin bottom of the sound hole has warped (been sitting in a hot room), now the cone doesn't sit correctly, it's resting at two places on bottom.
Given the very thin nature of the material and the cavity between the warped bottom and the ply back of guitar body, is there any reason why I shouldn't use a Stanley Knife and cut the bottom out? This won't weaken the body at all but will make the air volume greater under the cone. Possibly this may give the electric guitar a "slight" acoustic advantage?



The second issue, I assume I'll have to drill a hole through the spider to allow the piezo wire to pass through?
When the piezo sits in the bridge recess I think the wire would have to be bent to an unacceptable level. A hole would allow a less strained cable on it's way to the control cavity.

I've actually just done this very thing with mine, for a similar reason. My concern was aberrant vibration of the wafer thin wood after i had modded things, so i have scored and gradually cut through to leave a void between the main body section and the rear ply top.

I have similar concerns about the Rod Piezo sitting funny. Not quite sure what to do about that just yet.

[cork sniffer]

I've actually just done this very thing with mine, for a similar reason. My concern was aberrant vibration of the wafer thin wood after i had modded things, so i have scored and gradually cut through to leave a void between the main body section and the rear ply top.

I have similar concerns about the Rod Piezo sitting funny. Not quite sure what to do about that just yet.

Glad we are thinking similarly, with that reassurance I'll open the bottom up to the void.

Re the piezo, from what I've seen online the timber bridge supplied is too thin. I get the idea it should be a close fit into the spider, mine flops about. I think I'll make one that fits more snugly and after a little more consideration drill a hole through the spider to get a relaxed track for the wire.

[Singing Frog]

So where do we run the cable for the cone pick up? Do we cable tie the cable to the spider and penetrate into the control cavity at the closest point? Any ideas?

[FrankenWashie]

So where do we run the cable for the cone pick up? Do we cable tie the cable to the spider and penetrate into the control cavity at the closest point? Any ideas?

Yep, that’s what the interwebs tells me. I have run mine down the spider leg, and then put a 1/8” hole in the very corner of the landing for the cone into the cavity.