An AMA newsletter recently published this interesting chart prepared by Mr. Jack Jella, displaying chemical compatibility of some finishing materials, commonly found in our hobby.
   Example:
        Vinyl spackle IS compatible OVER polyester resin.
        Vinyl spackle IS NOT compatible UNDER polyester resin.
         C   indicates compatibility.   N  indicates not compatible.
          OVER
Polyurethane
Acrylic Enamel
Epoxy Enamel
Alkyd Enamel
Acrylic Lacquer
Butyrate Dope
Nitrate Dope
Aero Gloss Dope
Dupont 305
Polyester Resin
Vinyl Spackle

UNDER         
Vinyl Spackle  
Polyester  Resin  
Dupont 305  
Aero Gloss Dope  
Nitrate Dope  
Butyrate Dope  
Acrylic Lacquer  
Alkyd Enamel  
Epoxy Enamel  
Acrylic Enamel  
Polyurethane   



 
C
C
C
C
C
C
C
C
C
C
C




 
N
C
N
C
C
N
N
N
N
N
N





 
C
C
C
C
C
C
C
C
C
C
C






 
C
C
N
C
C
N
N
N
N
N
N







 
C
C
C
N
C
N
C
C
C
C
C








 
C
C
C
C
C
C
N
N
N
N
N









 
C
C
C
C
C
C
C
N
C
N
C










 
C
C
C
C
C
C
C
C
C
C
C











 
C
C
C
C
C
C
C
N
C
N
C












 
C
C
C
C
C
C
C
N
C
C
C













 
C
C
C
C
C
C
C
N
C
N
C


 

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