lookin good! some posts back the question of capacity was brought up, the more storage the better! my homeade has 1200gallons.the first burn to raise temp at startup 70deg to 185 deg took 6.5 hours . at a 20 deg diff it only takes about 45 min to 1 hour to reheat to temp. 1 load of wood a day in 3'x5' firebox. when building mine i got alot of neg feedback from ''store bought'' owners that said it will never work right.in dead of winter 20 deg average, furnace cycles 4-5 times a day, whereas less capacity units cycle 9-12 times a day for shorter burn periods,plus more smoke, also i recently went away for 5days temps got in mid 40s at night,before i left i brought temp up to 195, turn t.stat in house to 59 . came home to 140 deg water,point is thermal storage is key. all the years ive been at this site ive never heard anyone talk about GARN wood furnaces, lets face it there the most effiecent factory built units made,why?..cause of there unique firebox and exhaust design, and water capacity 2000gallons. well good luck with the rest of your project.