
Originally Posted by
darkmachine
I have a home built 2x6, and we made the firebox just under the syrup pan, so exterior dimensions are 24x24, but after bricking, we had full sized fire brick on hand so we used that, it's 20 x 20 inside. i cut all my wood 18" and crisscross it when i feed. I have grates like the ones your pictured. Grates were made out of 1/4" thick 2x2 angle iron spaced 1/4" apart. We run forced air, this is the second season and they show no signs of warping, and I have very little ash buildup under the grates. Feeding every 5 min by the clock i can put a boil in all 3 sections of the flue pan even when the sap is close to freezing.
Thanks. My firebox interior width is 23” and I can’t really change that. It would be an easy fix to reduce my depth to 20.5”. After that my options are 19” or 18.5”.
Edit: I went outside and checked several wood piles. It appears I cut my wood to 16”. Sometimes a little smaller or bigger, but δ firebox 18.5” deep maybe the right choice. I still would like to compare it to a few others. This alone may save me a ton of wood.
Last edited by Swingpure; 04-13-2023 at 10:44 PM.
2022 - 5 pan block arch - 109 taps, 73 on 3/16 lines, 36 on drops into 5 gallon pails.
930 gallons boiled, 109 L (28.8 gals) of delicious syrup made.
DYI Vacuum Filter
2023 - 170 taps, mostly on lines, 1153 gallons boiled, 130 L (34.34 gals) of delicious syrup made, on a 2x4 divided pan and base stack, 8 pipe, on a block arch that boiled at a rate of 13 gallons per hour.