Terry, I use coffee cup warmers for a heat source. They vary, but not much. Check out the local St. Vincent DePaul or Salvation Army thrift stores. They are very cheap, so buy several. One to keep your coffee, (or tea), hot and the best one for your glue pot. I strongly suggest a pastry thermometer to make sure you are at the right temperature. It usually comes with a protective sleeve for the 5" stem and has a small dial on top. These should be available at kitchen stores, etc. Regards, Joe Garrett, RPT, (Oregon)
This PTG archive page provided courtesy of Moy Piano Service, LLC