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Wiping With Vinegar


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#1 Babs

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Posted 31 December 2013 - 05:37 PM

What is the reason for wiping ware with diluted vinegar prior to majolica glazing/

Is this practice recommended for all glazes?



#2 bciskepottery

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Posted 31 December 2013 - 07:22 PM

Diluted vinegar can remove scumming that is sometimes found on bisqueware -- scumming is the result of soluble salts on the surface.  My guess is removing with vinegar on majolica ware is important because many fire earthenware one cone higher for bisque than for glazing and the scumming would not otherwise burn out.  Probably doesn't hurt other firing temperatures. 



#3 Marcia Selsor

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Posted 01 January 2014 - 03:52 AM

Also for majolica,,surface blemished should be sanded and washed. Blemishes also cause crawling.
Marcia




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