That's a nice rig.
I am wondering about the input for the pre heater. I am looking at making a similar one and planned on mine filling near the top of the pan. I noticed yours was placed near the bottom, any specific reason?
Matt Durrell
2012 - 12 Taps hand me down 2x2 and made a barrel stove
2014 - 20 Taps 8x10 timber-frame shack
2015 - 25 Taps
2016 - 28 Taps new 110 acres
2017 - 12 Taps january, 55 Taps spring and 15 Taps fall, same ol 2x2
2018 - Helping another sugarmaker 5000 Taps, 57 at home