Found an alternative crackle paint to GW stuff
How to Crackle - Chroma's Jo Sonja Australia
Jo Sonja 250ml Decor Crackle Medium – Art Shed Brisbane
Jo Sonja Crackle Pack - Chroma's Jo Sonja
Derivan Medium - Water-based Cracking Medium
Use on its own or mix with color to create a structurally stable crackle effect on rigid surfaces. Creates a crackled texture as it dries on rigid surfaces. Dries to a hard, opaque finish. Maintains paint adhesion, durability and archival quality. Can be used on its own and painted over once dry. Can be mixed with acrylic color - using no more than 15% paint to 85% medium. Apply paste evenly to surface with a palette knife. Leave to dry for at least 24 hours before painting over.
Liquitex | Crackle Paste 8oz
A transparent medium to brush on your finished project, or to be used as a basecoat that will create 'porcelain' crazed effects. The results will be a fine crackled pattern that makes your project look hundreds of years old. Generally, the thicker and fresher the paint and crackle medium, the larger the cracks will be.
Chroma Acrylics 3710 Jo Sonj Crackle Medium 8.4oz
Jo Sonja 250ml Crackle Medium – Art Shed Brisbane
Jo Sonja Crackle Medium - Chroma's Jo Sonja