Hi There,
My buddy and I are planing to build an evaporator for the upcoming season so we can sugar at our school(started a whole project up there with 200 trees or so)
The big thing is we have a very small budget. What we've got to work with so far is a bunch of square and angle stock. and metal to do the sides with, old red bricks to line it with, and two 2x3 flat English tin pans. We can weld and all that, and I've got a general plan however I was hoping I could get some specifics. How big should the fire box be (18''?) how long should the ramp be? how low should the ramp start? what should the ramp angle be? how tall should the arch be? what should the clearance be between the rear flat pan and the brick? Any advice would be greatly appreciated. Dimensions or even a blue print would be really helpful!

Thanks