Thanks, Ben. You'd think there should be something suitable in all that selection. And it's a good idea as an alternative to my plan. I would, however, only consider such forms to be a temporary stopgap measure: with tubular construction comes less structural stability and wear longevity for my longterm needs. Still, it's worth a look.
"If you take music out of this world, you will have nothing but a ball of fire." - Balochi musician
You have several choices for hardness. If your standard is an auto tire then either a 60 or 80 might work for you. Below are some examples from Wikipedia. The fuller explanation of durometer ratings is here.
Material Durometer Scale
Bicycle gel seat 15-30 OO
Chewing gum 20 OO
Sorbothane 40 OO
Sorbothane 30-70 OO
Rubber band 25 A
Door seal 55 A
Automotive tire tread 70 A
Soft wheels of roller skates and skateboard 78 A
Hydraulic O-ring 70-90 A
Hard wheels of roller skates and skateboard 98 A
Ebonite rubber 100 A
Solid truck tires 50 D
Hard hat (typically HDPE) 75 D
I'm asking you because you're an educated sort of swine. John LeCarre
Local folks, too. That's a plus if they can meet my needs.
And thanks for the chart. It was a good reminder, because I vaguely recalled 70 Shore A as being the median for what I wanted, but it slipped from memory.
"If you take music out of this world, you will have nothing but a ball of fire." - Balochi musician
Cast Urethane may end up being a bit slippery for a cane plug, but YMMV. Neoprene rubber rod I found on MSCDirect might be a better choice. For $13.50, worth a try.
