Texas Springtime Snow

Yesterday it snowed in North Texas.  I was working on a Cascade Refrigeration System, you might know it as a Deep Freeze, and in testing the Environmental Test Chamber I made some snow.  Its about the only way to make snow in North Texas in March.  This chamber a leaked out its refrigerant over a long period of time.  We had an AC guy quote charging it, and he wanted $1500.  Wut?  So, we hatched a plan, did our interwebz research, got a manual, and a schematic.  This Thermal Test Chamber wanted exotic, and obsolete refrigerants, very expensive.  Our methodology is low budget, so we had to find the most cost effective way to do this.  We used some borrowed AC Gauges, R12 to R134a adapters, and one 12 oz. can of R134a to recharge this Thermal Test Chamber.  $12.99 at Autozone...  It hit -45F because of the Cascade, two stage, Refrigerant System...  Snow!