3/16 is not generally used on buckets because you don't have enough drop in elevation (or have mechanical vacuum).
That being said, was the sap flowing out the bottom of the tube? If yes, just wait until you get more favorable weather. If the temps there in Tennessee below freezing over night and in the 40's during the daytime and the trees had time to thaw you may have another issue, like were there drill shavings left in the taphole? To remove them, do not blow into the hole, use a little twig to clear, and use a fresh twig on each hole.
Dave Klish, I recently bought a 2x6 wood fired evaporator from A&A Sheet Metal which I will be converting to oil fired
Now have solar, 2x6 finish pan, 5 bank 7x7 filter press, large water jacketed bottler, and tankless water heater.
Recently bought another Gingerich RO, this one was a 125, but a second membrane was added thus is a 250, like I had.
After running a 2x3, a 2x6, 3x8 tapping from 79 taps up to 1320 all woodfired, now I'm going to a 2x6 oil fired and a 200-425 taps.
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Backyard sapper 
Originally Posted by maple flats
