Attaching Plaster Castings to Extruded Foam

Model Railroader Layouts and layout building
1

To attach a plaster casting, be it from a rock mold or anything plaster or hydrocal, to foam (extruded foam) What is the best adhesive to use. I see some using “hot glue” from glue sticks. Others use some form of adhesive like “liquid nails”. Or even making a patch of wet or fresh plaster, although that seems like a lot of extra work. What about the same type tube caulk that is used for putting down track?

Chris

2

That’s what I’d use, Chris. It’s inexpensive and it holds well.

Tom

3

Hot glue could easily melt pink foam. That would be a poor choice.

How big are the castings? Are you mounting them horizontally, vertically or on an angle? For most castings, I use white glue or Aileen’s Tacky Glue. As long as you’ve got enough flat-on-flat surface area, most adhesives will do the job.