I used a Dremel tool to smooth the inside of the pickup cutout. It jumped out and scored the surface several times. I was too lazy to get all the scratches out. C'est la vie.
Saddles were cut from more copier shaft. Drilling and tapping the holes for the height adjusting screws was the most tedious part of this whole project. Six 4-40's. And I was thrilled I didn't break the tap! But I did break about 5 bits.
These are the springs. Ball point pen springs were not stiff enough, so I used clothes pins.
Sorry to disappoint, but I used a set of real strings I had around. In Africa, I've seen some musicians use unbraided bicycle brake cables
on their tin can guitars.
On to the pickups. Forms were made from PC board in the copier. I picked the one with the fewest components, desoldered them and ground off the copper pads (belt sander, of course.)
After the guitar was together, levels from the separate strings of the bridge pickup were quite varied. Some research showed how the poles were arranged. I had to cut the magnets in half and rearrange them.