The Fresh Loaf

News & Information for Amateur Bakers and Artisan Bread Enthusiasts

Need Help finding Calcium Aluminate.

cfield's picture

Need Help finding Calcium Aluminate.

I am building an oven off an Alan Scott plan.  I am having a hard time finding a supplier for (10) 94lb bags of calcium aluminate for the oven.  It is also refered to as Fondue, or Lumnite.  Please let me know if anyone has any help.  I am located in Eastern Pennsylvania.


PeterS's picture

You are looking for a castable refractory. Google kaocrete. One of the wood fired or pizza oven forums should have a treasure trove of info about this.

Google "Kaocrete in PA"

Thermalmax, Inc.
202 East Cherry Street
New Castle, PA 16102

vtsteve's picture


The old Alan Scott ovens tend to be underinsulated, relying on sheer mass (and lots of fuel) to maintain temperature. The FB site has a number of builds using a vaulted design. You can still build a high-mass oven, but adequate insulation will keep the heat inside, where it's useful. I did a highly-insulated Pomepii-style dome oven with a 4.5" thick floor and walls, and I can bake 30 loaves @ 740g from a single firing to ~620F.

I *really* like this design...

sgregory's picture

It is fondulac.  Hard to get and expensive.  Usually must purchase in cash and in a pretty large amount.  I purchased refracfories through ONEX refractories due to my connection with the steel industry.  The steel industry is drying up in eastern PA but look up Harbison Walker, Vietcher Radex, or just Refractory.  Talk to their inside sales guy and see what they have. They will certainly help you when you explain what you are trying to do with it. 

Mixing it properly is critical, must be precise. 

Also what is it for in Allen Scotts Design?   I agree with vtsteve, while mass is good, insulation is very important.  I used vermiculite and cerowool. 



edit:  If you have to go to New Castle, check out ONEX in Erie, Universal Refactories in Warren or the others I mentioned above.  All within shouting distance.