Wheat paste glue 1 to 1** with
Dissolve in hot water before using. This is a recipe I found on the internet.
“Ingredients. The ratio is 1 part gum to 2 parts water. Boil water (or use distilled water) and allow to cool to about 140° F (60° C) and then add the powdered gum, stirring to make sure there are no lumps. Continue warming the mixture at that temperature and stirring to dissolve the gum arabic completely.
*I have been reading up on wall board mud and plaster. 10% Talc added to the mix in mud reduces cracking. I think I might try talc in my next primer recipe.
**Use a scale and be very precise
Experiments are ongoing. These are my latest recipes.