Thanks, everyone.

I also considered the glue and paper method. And it is a better method than the double-sided tape.

I was told a razor easily cleaned-up the Elmer's glue after separation.

But lazy me didn't want to wait for the glue to dry, so I went the double-sided tape way. (Which I regretted.

I'll only use pins next time. It was a super good way to connect the scales together tightly while sanding and working on them.

The drafting compass was also a great idea! (I have a few laying around in my office somewhere).

Onto my next project.