I have Soyer, Schauer,Ninomiya,W.G.Ball,Thompson and old Uhlig enamels. I have used Ninomiya over Schauer and there is cracks under the glossy surface.Even when I refired the piece and let slowly cool down.Is it not cracked on surface but you can see tiny lines under.

Is here anybody that have any type of chart which enamel is suitable with another? Or maybe information about expansion for each one and some explanation.

Thank you

R.

Look in Notebook 1 - click on General Information - look to the right side under "Pages" and you will see "Thompson Enamel Charts" listed - click on -  As for the other companies, I would contact them directly for further information on their product.

Dear Rudolf,  there is an old book called Cloisonne' and Champleve' by P. and J. Strohsahl and Coral B.

which includes an appendix with a list of: Characteristics of Commercially available Enamels. This could be of use to you, however it does not include Ninomiya yet.  It lists melting points and firing ranges of Thompson leaded enamel, O' Brien, and Schauer enamels. also Potential Hazzards. Ingrid Regula