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Adding Vent To Older Kiln...


clay lover

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Larry that is a slick job, we were getting ready to build our own system when we got a call about a local potter that had cancer.  She had recently bought some new equipment and was selling it, I paid 200 for the envirovent new in the box.  It wasn't the bargain of the year but I thought it would help her out financially.  Denice 

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The blower is quite oversized. I believe the standard envirovent blower is
135 CFM. This one is 240 CFM inline off of eBay.. I didn't know how much I would need in my crude
home brew version. It was not much more expensive to get a larger one.
Also, the six-inch was the smallest I could find that had metal fan blades
versus plastic. I was worried about the heat melting the plastic blades but
the exhaust turns out to be no place near that hot. There is enough leakage
to cool the hot kiln gas. I use the rheostat all the time. It is just one
of the standard rheostats used to control incandescent house lights.

The one thing I would do different is to take center tube, connecting the
blower to the vent duct, down to a sheet metal shop to get the other end
crimped. You can't buy those straight tubes crimped both ends. By far the
hardest part was hand crimping the uncrimped end.

Let me know if you have any other questions

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