To work with plaster in your dream suggests that there is some matter that you are trying to resolve or settle.

If you are making a plaster mold in your dream, then it means that you are stuck with living in the past. You are unwilling to change and evolve with the times.

To dream of seeing walls plainly plastered, denotes that success will come, but it will not be stable. To have plaster fall upon you, denotes unmitigated disasters and disclosure. To see plasterers at work, denotes that you will have a sufficient competency to live above penury.