max. thickness slab for 36" form out-side use for cone 04 clay?
Posted 01 February 2012 - 06:37 PM
I want to do a big 36" duck to be exposed outside in the garden,
will be done in slab and would like to know if I can go for about 2 inches thick slab, thinking thicker+ stronger .... also,
since would be for outside, I work with cone 04 and wonder if I make it impermeable would withstand the weather (no much frizzing, lots of rain) or is required to go higher cone?
Thank you very much!
Posted 01 February 2012 - 09:59 PM
I beleive you have to fire it to it's correct cone or it will take on moisture.
you might want to fire a test piece of clay and see if it is fully vitrified at the advertised cone too.
Posted 02 February 2012 - 01:21 AM
Posted 02 February 2012 - 05:11 AM
I don't think it would be necessary to make it that thick at all.
You will need a big "oven" and a lot of electricity to "cook" it.
Thickness does not necessarily mean a longer life.
Why does it need to last forever anyway?
Let it age and let the moss grow on it, it will be more part of the garden then.
Anyway, post a photo of the duck on the gallery, I would love to see it.
All the best with the big duck.
Posted 02 February 2012 - 07:04 AM
Posted 02 February 2012 - 06:42 PM
I will try one inch, as architectural structures I have seeing, and with higher cone to be sure..... I read cone 04 don't vitrify, some experience about this, but will go at least cone 6...
planning to do it in 3-4 pieces and glue with epoxy after cooked.
I will post the photos after so you all can laugh at me : I want to fly high and be sure the wings don't melt or brake (ahahahah)