#21  
Old 04-11-2013, 02:02 PM
Serf
 
Join Date: Mar 2013
Location: New Zealand
Posts: 22
Default Re: Need advice on chimney and outer arch construction

Thanks Mike
That;'s good advice. I always wear gloves, but still end up getting cement and other nasties on my hands. Maybe I will use balsamic vinegar and claim it is a new kind of after-shave.
Incidentally, I have been sent photos from a guy who has retrofitted a clay chimney to his oven. He shaped clay around a wire skeleton, which obviates the need for a mould (mold in American?) It looks a bit "rustic", but I imagine it could be finished nicely with a coat of render.
Cheers
Max
Reply With Quote
  #22  
Old 04-11-2013, 03:39 PM
mrchipster's Avatar
Il Pizzaiolo
 
Join Date: Apr 2010
Location: Minneapolis, MN USA
Posts: 1,261
Default Re: Need advice on chimney and outer arch construction

Quote:
Originally Posted by SableSprings View Post
Max, since you are going to be working with lime and home brew mix I suggest you pick up a gallon of cheap white vinegar. After working with any cement/lime mix, wash your hands with soap & water and then give 'em a good rinse & rub with the vinegar. (I find that even wearing gloves I end up getting my bare fingers involved somehow with the mix or components...) The mild acid neutralizes the lime (base) component that's still on/in your skin and really helps keep your hands from cracking & hurting.
Another trick is to use a good hand moisturizer prior to, and intermittently while doing the work (Ask your social director which one she uses). It will help but not prevent irritation.

Chip
Reply With Quote
  #23  
Old 04-11-2013, 07:36 PM
Gulf's Avatar
Il Pizzaiolo
 
Join Date: Sep 2011
Location: Mississippi
Posts: 1,680
Default Re: Need advice on chimney and outer arch construction

Back when my hands were accustomed to brick laying, I kept them coated in mineral oil. In those days I had no finger prints . Lately I have become fond of disposable latex exam gloves. They are relatively cheap, if you can get them in the box of 100. I still use a scented variation of mineral oil, though . It is called "baby oil" .
__________________

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.



To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #24  
Old 04-12-2013, 01:55 AM
Bacterium's Avatar
Master Builder
 
Join Date: Apr 2007
Location: Adelaide - South Oz
Posts: 560
Default Re: Need advice on chimney and outer arch construction

I use vinegar afterwards..... funny enough it does work.
Although it does attract jokes about fish and chips
__________________
Cheers
Damon


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
  #25  
Old 04-12-2013, 02:28 AM
brickie in oz's Avatar
Il Pizzaiolo
 
Join Date: Mar 2009
Location: Whittlesea
Posts: 3,455
Default Re: Need advice on chimney and outer arch construction

Fingers cracking and burning.
I think it is the clay that does it, the lime wouldnt help thou.

Working for years as a brickie with the same mix of mortar day in and day out the only time my fingers cracked and burnt was during winter when it rained more.

Where we are has a very reactive clay subsoil, when it gets wet the clay sticks to very thing, if you walk through it, it gets on your clothes, tools and equipment.
__________________
The English language was invented by people who couldnt spell.


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
  #26  
Old 04-21-2013, 05:46 AM
Apprentice
 
Join Date: Jan 2013
Location: virginia
Posts: 106
Default Re: Need advice on chimney and outer arch construction

If you build an enclosure around the oven, do you still need to build a chimney around the clay flue liner? It seems I have seen a couple of youtube ovens where they did not build a chimney, but just left the flue alone.

Thoughts?
Reply With Quote
  #27  
Old 04-21-2013, 11:00 AM
SableSprings's Avatar
Apprentice
 
Join Date: May 2009
Location: Roseburg, OR USA
Posts: 239
Default Re: Need advice on chimney and outer arch construction

I believe most places have codes regarding leaving an air space/gap between the chimney and any flammable objects (i.e. plywood roof/wood joists). I built a brick chimney around my double flue liner primarily for looks. I also felt a little uncomfortable looking at the tall stack of liners with all those seams that could get damaged or fail over time...the external brick chimney gave me piece of mind (and made it easier to build the roof/chimney interface).
__________________
Mike Stansbury
Roseburg, Oregon (
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
)

Photo albums

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
  #28  
Old 04-21-2013, 05:41 PM
david s's Avatar
Il Pizzaiolo
 
Join Date: Mar 2007
Location: Townsville, Nth Queensland,Australia
Posts: 4,855
Default Re: Need advice on chimney and outer arch construction

Quote:
Originally Posted by SableSprings View Post
The small air gap you'll have between the firebrick and facade will be much more effective if you don't fill it (especially with hi temp silicone). Also on the lateral chimney support, I just put in a couple extra pieces of rebar down the holes in my side chimney bricks and again at an angle on the outside embedded in the insulation cladding (perlcrete for mine). Seemed to tie it all together quite nicely.
I fill the gap between the outer decorative arch and the entry with vermicrete. It is slightly flexible so it can work as an expansion joint as well as a thermal break. Some builders cover the gap with some stainless sheet as this area gets some rough treatment.
Reply With Quote
  #29  
Old 04-21-2013, 06:20 PM
stonecutter's Avatar
Il Pizzaiolo
 
Join Date: Jun 2007
Location: South Carolina,USA
Posts: 1,909
Default Re: Need advice on chimney and outer arch construction

Quote:
Originally Posted by fabby View Post
If you build an enclosure around the oven, do you still need to build a chimney around the clay flue liner? It seems I have seen a couple of youtube ovens where they did not build a chimney, but just left the flue alone.

Thoughts?
No, you don't need to build a chimney around a clay flue...but you want 4" min air space from combustible surfaces.
__________________

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Current WFO build -
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


When we build, let us think that we build for ever.
John Ruskin
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
Engineering Bricks for the Arch? cleverdick Design Styles, Chimneys and Finish 4 03-10-2011 04:01 PM
Chimney stability question charliefarley Pompeii Oven Construction 1 08-14-2010 06:13 PM
Raised/insulated chimney Dolf Pompeii Oven Construction 10 06-26-2010 10:45 AM
Chimney placement for restaurant brick oven giasone Introductions 1 01-17-2010 11:12 AM
Full hemisphere arch? kebwi Tools, Tips and Techniques 22 10-02-2009 11:03 AM


All times are GMT -7. The time now is 06:23 AM.

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