The R & D continues on my EUB project, and I'm now experimenting with a different configuration of the Percussive Pickup. It's a different combination and position of the coils, but I'm using the same type of construction as I used above. A simple walnut block, cut on my Pin Router, with the two coils epoxied into the block.
Cutting out the walnut block on my Medium Green Pin Router. You've seen that technology over on my Pin Routers thread, I hope. A basic 2-D pickup block like this can also be made with a hand router and fixture, or a CNC router, or a 3-D printer.
The block is simple; a chunk of 3/4" thick walnut with two rectangular openings for the coils and a smooth straight perimeter. All cut with a straight 1/4" dia router bit. The block is held onto the fixture with two 1/8" steel dowel pins.
While it was in the fixture, I prettied it up by running a 1/16" Beading bit around the perimeter.
Adding shielding around the coils: I drill two small holes at an angle into the end walls of the openings for the coils......
I cut a short length of 20ga Buss Wire, bend it into a U-shape, and plug the ends into the two holes. Then bend it up against the end walls. Then I cut strips of 3/4" wide conductive copper shielding tape and stick it in all around the walls.
And there's the shielding. The tape makes good conductive contact with the Buss wire (I checked to make sure). Later, I'll wrap a wire around the Buss Wire and solder it.
I put two layers of Clear Packing Tape on the top side of the block, wrapping around onto the sides. Then flip it over and stick the coils down in, sticking them right to the Packing Tape. Those coils are same as I use on my AMB-2 Scroll Basses.
Then set it on some waxed paper, and pour in the West Systems epoxy, letting it fully fill in around the coils. The coils had previously been potted with Total Boat Clear Penetrating Epoxy, as I do on all my pickup coils.
After the epoxy cures, I pull off the tape and do a light block sanding on the top surface. I wiped on a coat of Osmo, and it's ready to install.
This is for a diaphragm-type percussive pickup. The diaphragm and bridge assembly mounts on top of this block. And the diaphragm wiggles over top of the coils to make that distinctive Diaphragm Pickup sound.