Thanks all. I was looking for a hexagonal cross section, vs the usual round ones. Those Ritchey's will do nicely, like the outside ends.

As to the "GF". She is vintage *and a classic*. So I married her back in 1960! Best move I ever made. Almost lost her to Pneumonia a few years ago and she's now a long term cancer survivor on the mend. I'm the care giver, & mostly home bound, so always on the look out for worthy projects in my work shop. Don