Rewinding wooden spools for old sewing machines

If you have an old sewing machine, treadle or hand crank, that you use at living history demonstrations, you will have found that the thread on the old wooden spools is very likely to be brittle and unusable.  Wouldn't it be nice to have solid thread on the machine but on a wooden spool.  Here is an excellent article that give directions for easy winding of wooden spool with modern thread. 
http://www.quiltingboard.com/vintage-antique-machine-enthusiasts-f22/project-rewind-back-60s-reuse-your-wooden-spools-t205624.html