I need to make a reamer and tenon cutter

I am writing this as a reminder to myself: I have wanted to make stronger legs for benches and stools, and I now realize that I need to make a reamer (and an accompanying tenon cutter).  Dave Fisher's recent post got me started on this.
Here is an article from greenwoodworking.com

Here is an article from Tim Manney on making a matching tenon cutter.

Eric, do this!