hi
The tape is available at any stained glass hobby shop.
I took two pieces of hull planks and spaced them apart the width of the copper tape then glued two more hull planks on top of the first two but overlapping slightly into the space for the tape. Then run a length of tape into the tape space. Use a pointed, not sharp, stylus to scratch lightly across the tape to the length of each tile of copper you are creating. The next thing is to use the stylus to mark the simulated bolts on each tile.
I put 4 on each side with one at each end in the middle.
Hope this helps. I will check to see if I have the jig and post a photo.