#1  
Old 06-24-2009, 09:35 AM
Peasant
 
Join Date: Aug 2008
Location: North Thompson Valley,British Columbia
Posts: 34
Default vermiculite/portland question

I got the final keystone in last night, and am wondering if I should be applying the vermiculite/portland mix right away, or wait until the fire clay is cured? Any help here greatly appreciated.

Ian
Reply With Quote
  #2  
Old 06-24-2009, 04:48 PM
Neil2's Avatar
Il Pizzaiolo
 
Join Date: Oct 2006
Location: Vancouver Island
Posts: 1,374
Default Re: vermiculite/portland question

There are two schools of thought about this.

For mine, I applied the vermiculite/portland (over several layers of heavy tinfoil) right away. I kept this damp for about a week as I proceeded with other tasks to finish the dome.

I didn't start firing and curing until the dome was complete.

Part of the reason I did this was that I built it during December/January and wanted some protection from rain before I started the curing process. (I'm on Vancouver Island)
Reply With Quote
  #3  
Old 06-24-2009, 04:53 PM
Apprentice
 
Join Date: Feb 2009
Location: Australia
Posts: 118
Arrow Re: vermiculite/portland question

Ian,
don't complicate your build any more than necessary.
As I built mine, I had a tarp over the build area as it was winter and raining regularly, and plastered my dome with the vermiculite cement immediately after dropping in the keystone.
Why wait and then re-wet your dome. I was sensible with my drying but nowhere as careful as other have been. Sure, build up your temperatures slowly over a week or so but dry the whole oven once rather than several times/sessions.

Rastys
Reply With Quote
  #4  
Old 06-24-2009, 09:21 PM
Peasant
 
Join Date: Aug 2008
Location: North Thompson Valley,British Columbia
Posts: 34
Default Re: vermiculite/portland question

Thanks for the input folks! That's what I thought, but needed some reassurance.
This forum community is amazing. Answers to questions from close to home to halfway around the world. I can't thank you folks enough.

Ian
Reply With Quote
  #5  
Old 06-25-2009, 04:03 PM
Neil2's Avatar
Il Pizzaiolo
 
Join Date: Oct 2006
Location: Vancouver Island
Posts: 1,374
Default Re: vermiculite/portland question

Be patient with the curing process.

Nothing much seems to be happening with the first 4 or 5 firings, then, as it drys out, the retained temperatures start to go up quickly.
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



All times are GMT -7. The time now is 07:37 AM.

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