Since there isn’t a separate subforum I figured I’d ask here.
Context: On Sunday I made a spiral staircase around a foam block and I’ve since used Durham’s Wet Putty on it to texture it and give it the shape I want. I did a thinner layer to cover the whole thing then I used a thicker mix to create thicker walls, turned the stairs to a ramp, and raised some edges for cover.
Question: Should I use a sealer spray on the putty after I sand it down?
My plan is to base coat it in krylon’s grey primer, then water down titebond wood glue (all I have on hand), and add that powder earth pigment stuff I keep seeing everywhere. I have fine soil for the walkway and a medium grey mix for the walls. This is my first time building terrain like this. Everything else I have is 3d printed or papercraft. Thanks for any and all tips.