Magnesium Glazes Peeling Off Of Bisque

[docweathers]

I'm applying glaze to bisque. It starts to crack  as soon as the shine is gone. Shortly large flakes are falling off of vertical surfaces.   Lalone Crawl is one of the worst., It is very high in magnesium. But I don't want to reduce the magnesium because I like the fired affect very much. 

 

Nepheline Syenite          70

Ball Clay                           5

Magnesium Carbonate    25
 

 

I would appreciate any suggestions on how I can get the glaze to stick.

 

thanks

[terrim8]

try putting a thin layer of slip beneath the glaze? I've tried this with beaded glaze and it works most of the time.

[docweathers]

That's a good idea. I will give it a try.