#11  
Old 01-09-2014, 01:09 PM
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Join Date: Jan 2014
Location: Alameda Ca
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Default Re: The Indispensable Tool for pete's sake !

Quote:
Originally Posted by deejayoh View Post
If you're planning to build a round oven out of bricks... an IT shouldn't be a stretch
a stretch ? whatcha mean
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  #12  
Old 01-30-2014, 04:37 AM
Master Builder
 
Join Date: May 2011
Location: South Australia
Posts: 550
Default Re: The Indispensable Tool for pete's sake !

Quote:
Originally Posted by wotavidone View Post
There are at least two ways to make the dome lower/flatter whilst still using the indispensible tool.
If you leave a couple of floor bricks out and pivot the tool from the level of the insulation layer underneath, then the height of the oven and the door is reduced by the thickness of your floor bricks, once yopu put them back in.
Or, you can use a T hinge, rather than an ordinary butt hinge, and offset the tool from the centre swivel point by a couple of inches. Then your stick will neccessarily be a couple of inches shorter, and your dome will be lower, with a flat section in the centre. However, first of all, you must check out your bricks and make sure you can fill up whatever hole this approach will leave, as you must obviously have a bigger plug/keystone.
Found an interesting set of photos that clearly illustrate how a flatter/lower dome can be built with a simple modification of the IT.
And the way this guy integrated his arch and dome bricks is really very good, I think.
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  #13  
Old 01-30-2014, 10:57 AM
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Location: Disneyland, CA
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Default Re: The Indispensable Tool for pete's sake !

Here's a graphic that illustrates how altering an IT creates a change in a hemispherical arc resulting in a flatter dome. You can get the same result without having to adjust anything by using a template.
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  #14  
Old 01-30-2014, 11:23 AM
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Join Date: Apr 2013
Location: illinois
Posts: 123
Default Re: The Indispensable Tool for pete's sake !

Not sure if this helps but here is what I did. This is my first WFO and I built this IT so the 39 inch diameter dome only has a 16 inch height. I purchased a cheap lazy susan type set-up from a big box store and fitted the top with a piece of plywood to which I attached my threaded IT. The hinged portion is offset from the center of the lazy susan by several inches which reduced the dome height. The bottom of the lazy susan is fitting inside the wood braces to keep the lazy susan centered on the dome floor. I plan on using the same set up on my next wfo this coming summer.

You'll learn a lot by reviewing the different threads on this site. Everyone is here to help and we all learn by doing. I never laid a brick before I started my WFO.

joon
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  #15  
Old 01-30-2014, 11:27 AM
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Join Date: Apr 2013
Location: illinois
Posts: 123
Default Re: The Indispensable Tool for pete's sake !

Oh, one more thing about the pic in my last post. The dome is sitting on the round insulation board which sits on the round (not rectangular or square) concrete base. The end result is something which resembles a giant concrete old time milk can.
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  #16  
Old 01-30-2014, 05:25 PM
Master Builder
 
Join Date: May 2011
Location: South Australia
Posts: 550
Default Re: The Indispensable Tool for pete's sake !

Quote:
Originally Posted by GianniFocaccia View Post
Here's a graphic that illustrates how altering an IT creates a change in a hemispherical arc resulting in a flatter dome. You can get the same result without having to adjust anything by using a template.
You don't have to adjust the IT either. Just decide how high you want the dome to be and offset it by the difference between that and the radius. You're overthinking this thing.
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  #17  
Old 05-08-2014, 12:46 PM
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Join Date: May 2014
Location: in the oven
Posts: 54
Default Re: The Indispensable Tool for pete's sake !

Quote:
Originally Posted by GianniFocaccia View Post
Here's a graphic that illustrates how altering an IT creates a change in a hemispherical arc resulting in a flatter dome. You can get the same result without having to adjust anything by using a template.

With all respect, that graphic is really hard to understand.
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