Instructables

gmoon

  • Date JoinedMar 2, 2007
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Orangeboard

johnster110 months ago

I need help on a cheap science fair project.

gmoon (author)  johnster110 months ago

What kinda help? I'll help if I can...

gmoon (author) 4 years ago
Images for upcoming "True variable-inductor wah" project.

freqresp1.jpgVI2.2.jpg
gmoon (author) 4 years ago
Passive inductor tone controls, ala "El Heisenberg"...
elh_1.jpgelh_2K.jpgelh_10K.jpgelh_500K.jpg
gmoon (author)  gmoon4 years ago
And one with the "mix" POT:


elh_500Kmix.jpg
gmoon (author)  gmoon4 years ago
Here's a dual pass/cut control (break at P1 and P2):
elh_dual.jpg
gmoon (author) 4 years ago
The inductor in my Norma "Barney Kessel" tone control:

_DSC7219.JPG
gmoon (author)  gmoon4 years ago
Here's the Norma...

guitar_001.JPG
taterkiller4 years ago
will i be able to save my guitar the brigde came off  the bridge is sitting next to the guitar
103_0046.JPG
gmoon (author)  taterkiller4 years ago
Yeah, probably--if there's no other damage.

Carefully sand off any old glue from both the guitar top and the back of the bridge. You can "mask off" the finish on the guitar with tape; then sanding shouldn't mar it.

Ideally you would want to use fancy deep-throated C-clamps which are designed specifically for this purpose. But those are expensive, and probably not worth the money unless the guitar is pricey. Instead just apply the glue and place a weight on top of the bridge.

If it's a fancy expensive guitar it's better to have this done by a professional. They will use hide glue, and make sure the repair is done right.

If it's not expensive, just buy some epoxy and glue that sucker down...
thanks for the help
gmoon (author) 5 years ago
Images of the in-progress "variable inductor" wah pedal.
_DSC0203.JPG_DSC0189.JPG_DSC0123.JPG
gmoon (author)  gmoon5 years ago
Schematic for the "variable inductor" wah pedal.
viwah_bench3.jpg
gmoon (author) 5 years ago
Wiring 12AX7 filaments (12V) as 6V, using the "center tap" of the filament. Pins 4 and 5 are the ends, pin 9 is the center.
filaments.jpg
gmoon (author) 6 years ago
My new (old) National Duolian.
national-2.jpgnational-3.jpgnational-4.jpgnational-5.jpgnational-6.jpgnational-7.jpgnational.jpg