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  #201  
Old 05-13-2013, 01:27 PM
cobblerdave's Avatar
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Default Re: 36" build in Tallahassee - AKA Bruce's Folly

Gudday Bruce
Here's an indorsment from me as well on the home brew mortar.
I am using n type mortar pre mix to do the brick veneering over my dome( if it stops raining!) . I add a squit of dish washing liquid and some fire clay to every bag. This way I know I am able to butter the end and the back of every veneer piece without it dropping off every time.
As a refractory ......the portland cement supplies the original "glue that holds the thing together. As time goes on the Portland will burn out but the lime sets and gets stronger, and provides te high temp "glue" . Lime also is more flexible and will take the thermal shock of an oven
Regards dave
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  #202  
Old 05-14-2013, 06:15 PM
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Default Re: 36" build in Tallahassee - AKA Bruce's Folly

Thanks for feedback regarding mortar. I will be starting a road trip on Monday headed west. We will be headed through though Alabama, Mississippi, Louisiana, Texas, turn north into New Mexico, and end up in a small town near Boulder, Colorado for a niece's graduation. They are having a mobile pizza oven do the catering, so hope to get some tips. At any rate the mortar issue is put to bed (so to speak) until we get back in a few weeks.

I had hoped to cut and lay out the bricks for the next course. However as soon I tried to add a vertical tilt to the jig, I realized I had no idea of what I was doing. First attempts had way too much taper from bottom to top. Could really use some help on this. Much appreciated, Bruce
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  #203  
Old 05-14-2013, 07:49 PM
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Default Re: 36" build in Tallahassee - AKA Bruce's Folly

Bruce

can you explain what you mean by vertical tilt? I am having difficulty understanding what you are having trouble with. Pictures always help too!

Neil
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  #204  
Old 05-14-2013, 10:30 PM
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Default Re: 36" build in Tallahassee - AKA Bruce's Folly

Bruce,
I think you may be thinking what I was thinking at this point in your build. Looking at the dome sheet calculator I input the needed parameters and ran the calculator. The 4th pic shows the spread sheet and the column labeled tilt I set my jig to 15.2 degrees and cut, and said to my self that right....... I think the sheet is talking about the tilt of brick as seen in the 2nd pic........The 1st pic is my jig which I was calling tilt the adjustment done with the long bolt and wing nut..........3rd Pic I'm calling side angle the taper of brick and adjusted by the wood back stop and wing nut............The bevel of the brick which get's rid of the inverted "V" which become more pronounced as the dome grows in courses is very small 1 to 2 degrees thus far.....I am on my 6th course I think it was about 2.5 degrees. I am adjusting the tilt of my jig to by placing my angle locator on the saw blade to find zero then placing it on the table adjusting the tilt accordingly………… trial and error at this point I not sure if this trial and error method will continue to be productive............I’m open to all others suggestions........I'm probably confused on my terms as usual but I hope this helps.

PS. I have 2 solider courses, so I’m on the 4th course according to the spreadsheet.
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36" build in Tallahassee - AKA Bruce's Folly-sspx0131.jpg   36" build in Tallahassee - AKA Bruce's Folly-sspx0168.jpg   36" build in Tallahassee - AKA Bruce's Folly-sspx0175.jpg   36" build in Tallahassee - AKA Bruce's Folly-sspx0176.jpg  
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Last edited by kbartman; 05-14-2013 at 10:50 PM. Reason: added comment
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  #205  
Old 05-15-2013, 04:44 AM
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Default Re: 36" build in Tallahassee - AKA Bruce's Folly

Quote:
Originally Posted by kbartman View Post
Bruce,
I think you may be thinking what I was thinking at this point in your build. Looking at the dome sheet calculator I input the needed parameters and ran the calculator. The 4th pic shows the spread sheet and the column labeled tilt I set my jig to 15.2 degrees and cut, and said to my self that right....... I think the sheet is talking about the tilt of brick as seen in the 2nd pic....
Kbartman,
I went down precisely the same rabbit hole and I quickly began thinking that some villiage was short its idiot. Actually kinda nice I wasn't the first to have gone down that path. Like they say a little bit of knowledge is a dangerous thing (film at 11).

Quote:
Originally Posted by kbartman View Post
....The 1st pic is my jig which I was calling tilt the adjustment done with the long bolt and wing nut..........3rd Pic I'm calling side angle the taper of brick and adjusted by the wood back stop and wing nut............The bevel of the brick which get's rid of the inverted "V" which become more pronounced as the dome grows in courses is very small 1 to 2 degrees thus far.....I am on my 6th course I think it was about 2.5 degrees. I am adjusting the tilt of my jig to by placing my angle locator on the saw blade to find zero then placing it on the table adjusting the tilt accordingly………… trial and error at this point I not sure if this trial and error method will continue to be productive............I’m open to all others suggestions........I'm probably confused on my terms as usual but I hope this helps.

PS. I have 2 solider courses, so I’m on the 4th course according to the spreadsheet.
I got to the same conclusion after a number of ahas and oh nos. I did a quick calc and determined the difference in circumference from the bottom of the brick to the top was only 1.26" total or about .045" per brick for the first level. So was in the process of trying to figure out setting the jig. Trial and error seems the best way. Thanks for the good description and help. Much appreciated, Bruce.
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  #206  
Old 05-15-2013, 08:09 AM
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Default Re: 36" build in Tallahassee - AKA Bruce's Folly

Quote:
Originally Posted by boerwarrior View Post
Bruce

can you explain what you mean by vertical tilt? I am having difficulty understanding what you are having trouble with. Pictures always help too!

Neil
Neil, thanks for your reply. I think Kbartman's post does a good job explaining the problems I was having. If not, feel free to jump in. Bruce
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  #207  
Old 05-15-2013, 08:24 AM
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Default Re: 36" build in Tallahassee - AKA Bruce's Folly

Quote:
Originally Posted by cobblerdave View Post
Gudday Bruce
Here's an indorsment from me as well on the home brew mortar.
I am using n type mortar pre mix to do the brick veneering over my dome( if it stops raining!) . I add a squit of dish washing liquid and some fire clay to every bag. This way I know I am able to butter the end and the back of every veneer piece without it dropping off every time.
As a refractory ......the portland cement supplies the original "glue that holds the thing together. As time goes on the Portland will burn out but the lime sets and gets stronger, and provides te high temp "glue" . Lime also is more flexible and will take the thermal shock of an oven
Regards dave
Quote:
Originally Posted by Wayne73 View Post
G'day Bruce, I just stumbled onto your thred.
I too had trouble with the refactory mortor, so I started again with the home brew mix and I found it very easy to work with and no cracking.So if you have now found the right lime then maybe you could start again.
Wayne and Dave,
Been thinking about your comments. I must admit having some reluctance to giving up on the refractory mortar given that it is already paid for. Current plan is to pick up a bag of the Portland and lime mix and mix up a batch when I get home. In the meantime I may post a question on the fb mortar thread and see if there are any supporters of the refractory who care to offer advice. If I do switch to home brew can the refractory be used to provide extra thermal mass as a cladding over the brick?
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  #208  
Old 05-15-2013, 11:29 PM
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Default Re: 36" build in Tallahassee - AKA Bruce's Folly

Quote:
Originally Posted by Bec1208 View Post
can the refractory be used to provide extra thermal mass as a cladding over the brick?
Yes it can.
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  #209  
Old 05-16-2013, 03:42 AM
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Cool Re: 36" build in Tallahassee - AKA Bruce's Folly

Gudday Bruce
Off on a road trip....1/2 your luck .... It really sounds exciting. Would you mind posting a few pics? I'd be really interested to see some non commercial views of the states. You could start a post in the chat section at the bottom ( near the Ozzies funnily enough).
Anyway oven will survive under the blue tarp and thoughts of mortar can wait.
Regards dave
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  #210  
Old 05-20-2013, 09:09 PM
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Default Re: 36" build in Tallahassee - AKA Bruce's Folly

Quote:
Originally Posted by cobblerdave View Post
Gudday Bruce
Off on a road trip....1/2 your luck .... It really sounds exciting. Would you mind posting a few pics? I'd be really interested to see some non commercial views of the states. You could start a post in the chat section at the bottom ( near the Ozzies funnily enough).
Anyway oven will survive under the blue tarp and thoughts of mortar can wait.
Regards dave
We will be driving pretty much straight to get there by Thur pm (leaving Tue am) and distance is almost 1700 miles (2735 km). Current plan is to spend a few days in Santa Fe, NM and New Orleans, LA on the way back. I will try and get a few pics. Here is a link to some pictures I took a few years ago out west. I drove by myself and met up for about a week in New Mexico. On way back stopped at Roswell, NM and Carlsbad, Caverns NM (pics 1 & 2). If you like travel pics I can link to a few other trips.

Finished repairs on the initial courses and cut brick for new course. As you said now covered under a blue tarp.

https://picasaweb.google.com/1168565...COWqwvyo0tyaEA

Link to western trip photos.
Attached Thumbnails
36" build in Tallahassee - AKA Bruce's Folly-image_bcfbe9cd-3201-491b-80b6-738838d28c53.jpg   36" build in Tallahassee - AKA Bruce's Folly-image_0bf21f8f-36a7-4b17-bcd2-60c07c4dbb25.jpg   36" build in Tallahassee - AKA Bruce's Folly-image_241ff3f1-04d8-49ed-9b43-668399d2c98e.jpg   36" build in Tallahassee - AKA Bruce's Folly-image_3f2e7177-8360-436a-8895-ce2a68716510.jpg  
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