#31  
Old 05-20-2010, 01:47 PM
david s's Avatar
Il Pizzaiolo
 
Join Date: Mar 2007
Location: Townsville, Nth Queensland,Australia
Posts: 4,855
Default Re: Clay Oven on Verandah

The heat beads are also great because they don't flame up and release their energy quickly. When the oven is new and contains moisture it is a bitch to fire. The fire is hard to keep going. Try a gas burner.
Reply With Quote
  #32  
Old 05-30-2010, 08:43 PM
BackyardPermaculture's Avatar
Apprentice
 
Join Date: Mar 2010
Location: Brisbane, Australia
Posts: 151
Default Oven now insulated

My cob oven is getting a lot closer to being finished - I've made most of the enclosure and completed the insulation.

The enclosure is fairly standard - metal framing with FC sheeting.

Insulation is 50mm thick rockwool, and loose vermiculite. This rockwool insulates really effectively; I've got one layer over everything and a second layer on top. I then poured loose vermiculite to fill up the sides.

I ran a much bigger fire last night; lots of water came out, which meant the top of the rockwool got hot and steamy. We still managed to cook chicken legs and steak over corn cobs - have never had such delicious corn!
Attached Thumbnails
Clay Oven on Verandah-before-insulation.jpg   Clay Oven on Verandah-back-insulation.jpg   Clay Oven on Verandah-top-insulation.jpg   Clay Oven on Verandah-front-unfinished.jpg  
__________________
My Clay Oven build:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #33  
Old 05-31-2010, 02:48 AM
david s's Avatar
Il Pizzaiolo
 
Join Date: Mar 2007
Location: Townsville, Nth Queensland,Australia
Posts: 4,855
Default Re: Clay Oven on Verandah

Five days between finishing the cob and your first fire is way too quick. Rushed drying leads to warping and cracking in pottery and an oven is way thicker and will take longer. Can't emphasize enough the importance of taking it slow. I know it is hard because it is so exciting, but I'd hate to hear yo report that your oven walls have cracked and split from the centre. Slow down you move too fast, gotta make the ....
Reply With Quote
  #34  
Old 05-31-2010, 05:09 AM
BackyardPermaculture's Avatar
Apprentice
 
Join Date: Mar 2010
Location: Brisbane, Australia
Posts: 151
Default Re: Clay Oven on Verandah

OK, cool, but it's been 15 days and I've had small fires in there most of those days. Is that too soon? If so, how long? Thanks for the good advice, cheers, Mick.
__________________
My Clay Oven build:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #35  
Old 05-31-2010, 05:55 AM
david s's Avatar
Il Pizzaiolo
 
Join Date: Mar 2007
Location: Townsville, Nth Queensland,Australia
Posts: 4,855
Default Re: Clay Oven on Verandah

Handbuilding clays that have a high proportion of aggregate seem to dry slower than those that have a low proportion. It's hard to say how long to wait, but I've found that thick sculptural work needs at least three weeks slow drying before attempting firing. The outside surface may appear dry, but the inside will still contain moisture. Most of my accidents from "blowing" have occurred at around 300 C You might be safe to try to avoid higher temps until you've fired it about 6 times. The smokey problem always occurs with a new, moist oven and it will just keep improving the more you use it. Try to keep the oven warm with heat beads which will provide a safer gentler heat until you're sure it's completely dry.
Reply With Quote
  #36  
Old 05-31-2010, 06:40 AM
BackyardPermaculture's Avatar
Apprentice
 
Join Date: Mar 2010
Location: Brisbane, Australia
Posts: 151
Default Re: Clay Oven on Verandah

OK, thanks, I'll keep going with smaller fires then.
__________________
My Clay Oven build:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #37  
Old 06-04-2010, 05:37 PM
Peasant
 
Join Date: Mar 2010
Location: australia
Posts: 40
Default Re: Clay Oven on Verandah

hi Mick,
I was going to build something like your oven until i came across this site.
nice job so far and will be interesting to see if no further cracks appear.
all said and done each build is different , its the end result that we are after, an oven that can cook pizza and slow roast meals for our family and friends to enjoy.
good luck on the finish and enjoy your first pizza when you get to that stage.

regards Gary
Reply With Quote
  #38  
Old 06-05-2010, 07:09 AM
BackyardPermaculture's Avatar
Apprentice
 
Join Date: Mar 2010
Location: Brisbane, Australia
Posts: 151
Default Re: Clay Oven on Verandah

Quote:
an oven that can cook pizza and slow roast meals for our family and friends to enjoy
.
I think mine is very close to that point
__________________
My Clay Oven build:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #39  
Old 06-05-2010, 11:25 PM
Serf
 
Join Date: Apr 2010
Location: Australia
Posts: 3
Default Re: Clay Oven on Verandah

Hi

Have you finished the render coating yet?

I have an oven similar to yours yet my render coating, to try and weather proof the oven, cracks during a pizza cook.

Would be interested to see how you final finish coating behaves.

Simon.
Reply With Quote
  #40  
Old 06-07-2010, 12:29 AM
Peasant
 
Join Date: Mar 2010
Location: australia
Posts: 40
Default Re: Clay Oven on Verandah

hi Mick,
dont forget to post photos of your first meal and pizza,
you must be getting close to that now ?

regards Gary
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 10:14 PM
Pizza in a Bread Oven james Newbie Forum 17 04-24-2012 08:13 PM
starting my clay oven.....................or maybe not. Mickey-t Newbie Forum 48 06-25-2010 04:11 AM
Wood-fired oven in Dubbo Capt. Toddy Brick Oven Photos 4 04-23-2009 02:44 AM
Will the oven make all the difference? bobvl2 Newbie Forum 8 07-02-2008 09:55 PM


All times are GMT -7. The time now is 05:14 AM.

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