This is a few shots of a rebuild I did in 2002. I took an existing invested pot furnace and made a free-stander.

There are several things I would do different next time, especially having a way to easily remove and install the pot.

Click on any image for a larger view.

 

Mold for the inner wall

 

Inner wall cast with exhaust and drain

 

Test fitting the E.C.

 

Inner crown mold being fabricated
   
 

 

Lousy way to do the external crown mold - very cumbersome and not pretty
 

 

I like the sparks...

 

Plasma cutter good

 

Drain port ready to be cast

 

Exhaust port & Chimney

 

Tilting the furnace while casting the floor gives a slope toward the drain port

 

Fraxed up ready for the crown

Crown set

 

Top shell attached

 

Sill cast
 

 

S.S. front attached and drum packed with frax
 

 

View of the flame detector and thermocouple

 

I did eventually put a door over the drain port
 

 

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