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LINCOLN FIRE CLAY FOR J-CORE?

 
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is Lincoln fire clay ok for a poured J-core?
there's no Muddox fire clay in my area.
 
pollinator
Posts: 4154
Location: Northern New York Zone4-5 the OUTER 'RONDACs percip 36''
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michael valdez : If you can get Lincoln, get lincoln 60 Big AL !
 
gardener
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Location: latitude 47 N.W. montana zone 6A
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michael; I used lincoln fire clay on my cast core, mixed with perlite ,refractory cement and fiberglass strand . I used matt walkers "plans" to form up my core and my heat riser , everything worked great. Using a piece of sonitube as a sacrificial form for the heat riser was by far the best way for me. Only recommendations i will make are to make sure you have enough fireclay & perlite on hand before you start pouring or like me you will run short in the middle of your pour and have to do a cold joint in the middle of your core .
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michael valdez
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Thanks Allen, thanks Thomas.
 
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