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smallholder123 01-30-2012 01:39 PM

48 inch forest of dean UK
 
just starting out on my first ever WFO build with no Knowledge about bricks at all except what i have learned here comments welcome
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brickie in oz 01-30-2012 01:49 PM

Re: 48 inch forest of dean UK
 
Deja vu? :confused:

smallholder123 01-30-2012 02:32 PM

Re: 48 inch forest of dean UK
 
just thought i might get more feedback in this thread than commercial ovens ? as some one who never laid a brick much less cut tapperd ones i just want to get as much feedback as i go along so as not to end up having to un do anything mind the premix i got from kiln linings doesent seem to set at all after 5 days you can just pull a little and the arch came out and the bricks are growing a white fur ??

brickie in oz 01-30-2012 02:38 PM

Re: 48 inch forest of dean UK
 
Quote:

Originally Posted by smallholder123 (Post 126715)
the premix i got from kiln linings doesent seem to set at all after 5 days you can just pull a little and the arch came out and the bricks are growing a white fur ??

The premix sounds wrong, the premix I use air sets in about 10 to 15 minutes, sounds like your stuff will only set when fired which is no good for your build.

The white fur is efflorescence, its basically salt which is most likely in your water, chlorine is a salt, does your water smell like a swimming pool?

smallholder123 01-30-2012 03:29 PM

Re: 48 inch forest of dean UK
 
not quite like a pool but there is a high lime scale in the water ..does that mean if i do carry on and build carefully it will all set hard after a firing ?? or mayby get the heat gun out to semi set ?

brickie in oz 01-30-2012 03:33 PM

Re: 48 inch forest of dean UK
 
Quote:

Originally Posted by smallholder123 (Post 126719)
..does that mean if i do carry on and build carefully it will all set hard after a firing ?? or mayby get the heat gun out to semi set ?

Sounds like a lot of work to come unstuck right at the end if it doesnt set with fire?

Id be looking for some airset glue myself.

smallholder123 01-31-2012 02:08 AM

Re: 48 inch forest of dean UK
 
this is the blurb from the site i got it from i was thinking as there is no heat in the room mayby thats affecting it ?? and mayby my bricks ,sometimes being soaked overnight is causing the bricks not to set .. some seem fine others are not ??? KilnLInings Wet Air Setting Cement, this product is for jointing any of the bricks we supply, we suggest 1 tub/75 bricks. Though this depends how sparingly the product is used. The cement can withstand service temperatures up to 1600C. Material safety data sheets are available on request as too are Technical data sheets. Please be aware this product is an "irritant". Our KLW A.S.C cement comes in a 25Kg Tub.

brickie in oz 01-31-2012 02:38 AM

Re: 48 inch forest of dean UK
 
Obviously something is not right then after reading that.

smallholder123 02-01-2012 09:09 AM

Re: 48 inch forest of dean UK
 
ill say had to compleatly redo the entire archs and try a hot air gun in the next couple of days when it gets here and had a big set back as i got a new blade but on 20 m not 22.2 so bored it out a little and it must be a little out as when you put the brick up to it all you get is wobble wobble doh

smallholder123 02-01-2012 09:10 AM

Re: 48 inch forest of dean UK
 
what about a mix of brick dust cement fie clay and this wet air cement mixed ? any thoughts


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