DIY Battle Mat - problem

[shadowdragon]

I'm nearing the completion of a battle mat (one last paint wash plus matt varnish). It's canvas with paintable, acrylic construction caulking for texture with art student quality acrylic paints. The caulking had a few days to dry and felt dry when touched. The paint also...on paper or any other surface dries quickly but it seems the acrylic paint has interacted with the acrylic caulking and now the surface is quite tacky / sticky. Maybe the varnish would help but I'm loathe to add the varnish until the surface is dry.

Suggestions? Has anyone else had this problem. Is it merely a question of waiting or something else?

Online searches haven't been helpful. Someone commented that painting caulking is problematic...but no suggestions. Someone else had this problem using house paint but got no useful suggestions.

[titanu]

It's canvas with paintable

Sounds exciting Possibly of interest to Phil and Ian (see Godendag thread)

[shadowdragon]

Sticky acrylic problem has been solved thanks to the suggestion by deadtorius to sprinkle with sand....I used a some woodland scenic's yellow grass and sand...

So, now some action...a Punic war battle in North Africa.

The Roman deployment...their Baueda fortified camp will be painted this weekend.



The Carthaginian centre...



...and the overview. I still have to replace the yellow card (open fields) with something better.