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2 maybe 3 birds 1 stone?

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shipto:
The carousel has been put on temporary hold while i do something else which I will probably post next week sometime but I found myself thinking about the approaching winter weather and the need for cheap affordable heating.
So I have thought of an idea which may do 3 jobs in one tidy package, the plan is to build a forge outside the shop and line the back with bricks with holes forming channels all the way from one side to the other I can then use a 3 speed fan to draw hot air (might need to tune the insulation so its not too hot) into the workshop via some ducting.
Then I thought that being as i will be putting a blower on it for forge related work I might be able to rig up something to place on the blower outlet which will let me melt metal for casting too.
so I will have:
A: a fireplace thats not endangering the workshop and wont need putting out when I am done for the day and can burn itself out. Blower will not be used in this mode and the 3 speed fan can pull the hot air through the holes in the bricks and I can load it up with scrap wood to save on proper fuel.
B: a perfectly useable forge with a blower
C: with the addition of the furnace part a furnace for melting metals.
Any thoughts would be appreciated.

vtsteam:
I think it's very do-able and a very good idea.  :thumbup:

spuddevans:
I maybe not fully understanding your plan, but the only thing I would be worried about would be the danger of Carbon Monoxide from the burning fuel. I'd make sure you have one of those carbon monoxide alarms  :thumbup:

Tim

vtsteam:
I hadn't paid close attention to the method, just the general idea of a 3 purpose furnace. Air entry must be isolated from exhaust. One solution is to draw the air through pipes into the shop -- a simple heat exchanger.

Another possibility is to route a metal chimney through the interior and back out.

In one of my sheds, made of concrete block, I have a Listeroid diesel generator outside, with its exhaust pipe routed through the shop and back out. Its cooling water and radiator are also located in the shop. The radator is an auto radiator and angled in  two planes to allow convective circulation by both the coolant and air inside the shop. A carbon monoxide alarm is mandatory in  that kind of setup.

shipto:
The plan is to have the air thats drawn into the workshop will only be drawn through the holes in the bricks. Once they have been put in place I will render it with a fire cement mix thus sealing them off from the exhaust fumes. If I get time this weekend I will post a plan up.

oh and i thought of another possible use BBQ  :)

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