, 
oh and whts Portland cement? I mean is it a kind of cement or a name brand?the silly east Tennessean
Pam
From: Spaceman <Spaceman@starship-enterprises.net>
To: papercreters@yahoogroups.com
Sent: Tue, July 5, 2011 8:55:28 PM
Subject: Re: [papercreters] ''Papercreters plz help''
Cob ovens are made from cob. If you make it from papercrete then it will be a papercrete oven.
Is that a good idea? Maybe, maybe not. I have read about someone using papercrete blocks to line a fire pit, and they said it worked fine. I don't remember any followup posts about how long it worked fine, though.
With the right amount of portland cement then papercrete is self extinguishing and just glows from the heat. Since cob ovens often have a firebox underneath then a papercrete oven might work fine if the firebox is lined with something else. It might even work fine if the entire thing is papercrete and you use a cement heavy mix, even a mix with a good amount of clay. Isn't one of the features of cob ovens that they retain heat for hours after removing the fire? That is from thermal mass in the cob. Most papercrete does not have much mass, acting more as an insulator. A massive stone or concrete floor might give enough mass.
I have plans for a papercrete solar oven on the back burner, and way back a desire for a horno. If your papercrete oven works out, be sure to let us know. I have more access to paper than I do to clay.
spaceman All opinions expressed or implied are subject to change without notice upon receipt of new information.On 7/5/2011 8:26 PM, PamC wrote:
I'm making my 1st Cob oven and I was wanting to know would it be ok to make it outta papercrete ??? Thanks ------------------------------------ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/papercreters/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/papercreters/join (Yahoo! ID required) <*> To change settings via email: papercreters-digest@yahoogroups.com papercreters-fullfeatured@yahoogroups.com <*> To unsubscribe from this group, send an email to: papercreters-unsubscribe@yahoogroups.com <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ ----- No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1388 / Virus Database: 1516/3746 - Release Date: 07/05/11
__._,_.___
