I have built Italeri’s Building Corner. Exterior has turned out well but the interior is “hollow.” I want to fill in the interior so I can paint it. What do you recommend for filling the interior wall? I have celluclay, spackling, and art clay. Which do you recommend to fill this hollow interior?
Here is my suggestion. Get some 2 part sculpting clay, like sculpty or miliput or something. Fill the inside of it with celluclay to bulk it up and fill it up. Once it dried THEN put the clay overtop and sculpt the details.
I have poured plaster of paris into the back of the Italeri building/wall kits. it is cheap and easy to do. The plaster of paris can also be shaped and cut into bricks or blocks as well.
I agree that Plaster of Paris is probably the best way to go. It’s cheap, easy to work with, easy to clean up and can be carved, sculpted, etc with ease. The only drawback is that it is a soft and porous medium, so I’d suggest a thick coat of varnish (or some other sealant) prior to painting.
I recommend caution with epoxy fillers - some can generate enough heat during the curing process to melt or distort the styrene. If using epoxy, then apply it in thin layers to minimise the heat and build it up slowly.
When I built that Building, I used Sheet Styrene, glued it to the back, then cut it out along the contoures. Then I just sanded along the edges, filling in any cracks with puttty, then painted. I wish i had a Pic to show, but it came out great.
Another “filler” would be Durham’s water putty… the stuff is cheap, easy to use, non-toxic and dries extremely hard. It would also add a lot of strength to the wall itself.
Shellac cures in 30 minutes or so, much faster than a long oil varnish. Great for anything except under alcohol based sustances, or over alcohol susceptible surfaces.