Re: So I'm gonna build a switch rod (or 2)...
Buy the reamers. I use to use a rat tail file and spade bits. Bought the reamers, reamed one handle and kicked myself for not doing it sooner. Plus they will chuck up in your drill if you are in the gotta git it done now mode.
"Blessed is the fly fisher who's quiver contains grass, glass & graphite custom rods." Book of Rods 3:16