#11  
Old 06-16-2013, 06:44 PM
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Default Re: More questions for experts.

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Originally Posted by msylt View Post
Also, does muriatic acid do a good job at taking off dried interior mortar?? Thanks!!

Mark
Acid will attack the mortar in the joints as much as the smudges and the proper way to work with it is to flood the masonry so it doesn't draw the acid in....and more water in the masonry isn't what you want. Plus, using acid in a confined space it is more dangerous. Sponge and/or brush the mortar off at the end of the day to keep it clean as you build. For the staining that is on there, wire brush and elbow grease.
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  #12  
Old 06-16-2013, 06:59 PM
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Default Re: More questions for experts.

Thank you!
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  #13  
Old 06-16-2013, 08:16 PM
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Default Re: More questions for experts.

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Naturally, the diagram did not post as was intended. But the 2 top and 2 bottom bricks would extend over the single middle brick on each side and the opposing bricks would help carry the load. I'm no engineer, but this seems workable, doesn't it?? I just don't want a structural failure. The mortar is made by Alsey. It is called Hi Cast and has a decent amount of aggregate in it.
So, you are spanning the angled brick with the notched brick, and these will rest on the arches for the oven opening and vent? That works for carring the weight, but that angled brick is still 100% reliant on the mortar bond to stay put.

You used a bagged castable refractory to mortar your dome together? Interesting to see how that works out. Knowing what it is, you will have to really put some effort into cleaning off those stains.
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