Regarding Bill Black's posting of using phenolic tubing for Wurlitzer
rings and the subsequent search for a cheaper source, there are three
listings on eBay that might be useful.  Do a search for "Garolite
Phenolic Tube 1-3/8" OD x 1-1/4" ID.

A seller named "alwayslookingup" is selling cut off ends of two
different types.  Green glass fiber phenolic tubes are sold in 40-48"
length for $132.80, and 35-37" for $58.00.  A brown paper phenolic tube
in 39-48" lengths is sold for $30.96.  Shipping and handling is extra.

The easier way to find the three listings for the phenolic tubing is
by their eBay auction ID numbers:  121779336898, 121332842968, and
111346024744.  Hope this helps.

Chris Galantine
Redding, California