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Post by mscantrell on Nov 21, 2014 10:20:19 GMT -8
Good afternoon, all! Just as a thought experiment, imagine you have a small house with an antique woodstove. It's smoky and sheds ashes when adjusting the damper, irritating your spouse. It's inefficient, irritating you. Could you install a rocket heater in a day? Mass optional (but bonus points for including it). You've got to start in the morning and have fire by bedtime. You can cast the core (batch box or J, either way) ahead of time. Any takers?
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radek
Junior Member
Posts: 94
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Post by radek on Nov 21, 2014 10:48:15 GMT -8
im sure the J core with barel could be done in one day´,without the mass.I know because i have done it,with one handy helper.It took us 12 hours.If you would have the batch box precast ,i think ,could be done as well.
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Post by matthewwalker on Nov 21, 2014 11:16:42 GMT -8
Easily.
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Post by pinhead on Nov 21, 2014 11:23:09 GMT -8
With a pre-made cast core and heat riser, I could have one built in under two hours - including mixing the [already present] cob.
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Post by mscantrell on Nov 21, 2014 13:23:06 GMT -8
Sooooo...
Riser comes up into a couple of barrels stacked to serve as a bell.
Exhaust exits from the bottom of the barrelstack. Is there a good way to attach exhaust pipe to the barrel itself? Or does it need a bit of a brick base? Probably brick, right? Building that would be easier than cutting and sealing a barrel around the feed. But then you're mortaring things. And mortar is what had me wondering about a one-day build in the first place. Can you start firing the unit before your mortar dries? Isn't that trouble?
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Post by pinhead on Nov 21, 2014 14:20:03 GMT -8
I usually have a small fire burning as I mortar the barrel to whatever base it's sitting on (though my stove is in my shop, not my house, so I don't have to worry about smelling like smoke). You need a large manifold at the base of the barrel where it transitions to the chimney/exhaust flue. I've only used brick to make the batch box, and everything thereafter is made of cob. This includes the "base" beneath the barrel. This is an image from an extremely early incarnation of my previous Batch Box:
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Post by ericvw on Nov 21, 2014 15:04:10 GMT -8
If you can get a flue collar that comes typically in a drum stove kit, that might make the transition to flue pipe a little quicker. Cut a hole, squirt some furnace cement in a caulk tube, screws, and let it fly! Eric VW
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Post by Donkey on Nov 21, 2014 15:07:42 GMT -8
Easily.. I like to have a lot of adobe bricks around.. With them, I can build things VERY fast. The adobes themselves take a few days to a few weeks to dry completely, but they can just sit until building day. If you have your ducks all lined up before hand, no sweat!
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