@EndlessOps The ethanol:water azeotrope is an almost perfect solvent for cannabis resin, especially at low temperatures. It has the unique ability to pull only cannabinoids and other components of the resin without pulling epicuticular wax and vegetable oil. Isopropyl alcohol has a higher affinity for wax and some oils than ethanol does. It also has a higher boiling point and sticks around more readily than ethanol. Using an azeotrope, however, of 87% IPA to water may make it behave a little more like the ethanol azeotrope, but that b.p. and stickyness will still exist. The best option for price may be to use a mixture of ethanol:water:isopropanol, since this effectively combines two binary alcohol:water azeotropes and could be considered a type of denatured ethanol.