My kindergarten class has been working hard, we put in 50 taps on our school grouns.  They have been trudging through the snow to collect sap, we used a hand drill to drill the holes.  And now we are starting to boil using our home made evaporator?  I would love to speed up this process...can anyone help me out or point in the direction of a resonably priced hobby evaporator or a donation would be awesome.