#1  
Old 07-01-2009, 07:50 AM
Serf
 
Join Date: Jul 2009
Location: Valparaiso, IN
Posts: 1
Default How about an earth/refractory oven?

I don't really know what I'm talking about, but would it make any sense to build an inexpensive earth oven, but stabilize the earth mix with refractory cement, and make it modular for mobility? I really want the mobility feature, but of course, want to pay next to nothing for it. Any advice would be greatly appreciated.
Thanks,
Dan
Reply With Quote
  #2  
Old 07-01-2009, 10:06 AM
dmun's Avatar
Moderator
 
Join Date: Jul 2005
Location: New Jersey USA
Posts: 4,216
Default Re: How about an earth/refractory oven?

Earth ovens don't vitrify - they dry out and harden, but they don't become glass like fired ceramics. Moving such a thing, even a little, would cause it to crumble.

Also any talk of refractory concrete is incompatible with talk of saving money. Boy is that stuff expensive.

We all like to save money, and you'll find a lot of suggestions for that here, but you have some real problems with your idea as it stands.
__________________
My geodesic oven project:
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
,
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #3  
Old 07-01-2009, 11:05 AM
Gromit's Avatar
Apprentice
 
Join Date: Mar 2009
Location: Houston
Posts: 117
Default Re: How about an earth/refractory oven?

Quote:
Originally Posted by dmun View Post
Also any talk of refractory concrete is incompatible with talk of saving money. Boy is that stuff expensive.
I got a quote from a local outfit here in Houston called Able of $27 for a 75 lb. bag of their lowest-duty refractory which works out to $0.36 a lb. (Refractory Castables, Refractory Plastics, Refractory Mortars) By way of comparison, my 9 lb. firebricks were $1.20 or $0.13 a lb.

On the otherhand, REFMIX is about $2.50 a lb. HeatStop 50 is just a little less shipped from the factory. I have spent over $250 just on 5 bags of REFMIX.

A Casa90 is 650 lbs according to the spec sheet. Let's say 150 lb. of that is the floor. The 500 lb dome could be cast for $180. I have NO IDEA whether "AbleCast" is an appropriate product. I have attached a datasheet. I would imagine that at the least, it is an upgrade option over "mud" or clay.

The only cheaper option might be firebrick, homebrew mortar, and a chisel or angle grinder. A HF tilesaw alone makes the brick option more expensive than this.



Respectfully,
David
Attached Thumbnails
How about an earth/refractory oven?-ablecast.jpg  
Attached Files
File Type: pdf ablecast.pdf (19.9 KB, 210 views)
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Why Italian Wood-Fired Ovens are Round james Newbie Forum 50 04-01-2014 09:14 PM
Oh no - my oven is wet PizzaArthur Firing Your Oven 36 11-23-2009 09:16 PM
Larger Oven Design Help Mongo Getting Started 21 11-03-2007 08:03 PM
Neapolitana Style Oven (31.5") southpaw Pompeii Oven Construction 4 08-11-2007 06:29 AM
sizes for a 47" napoleon style oven? southpaw Pompeii Oven Construction 4 06-22-2005 02:40 PM


All times are GMT -7. The time now is 10:34 AM.

Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
2006/10 Forno Bravo, LLC