This is an original design that I started making to fit Sierra style pens. I decided to migrate the design to Jr sized pens. The woods are walnut and curly maple. There are 32 pieces in the cap tube and 36 pieces in the lower tube. The pieces are laser cut. Numbers were lightly engraved in the pieces so that they could be put back in their same relative position to one another. If I had used woods with more defined grain patterns, the indexing effect would have been quite obvious.