As part of my project on memeories and object that hold memeory, I was planning on casting the shot glasses collection I have acquired which are from around the world. Two of my friends and I get a shot glass when going abroad and bring it back as a collection. I thought this was a relevant and abstract form of collecting memories, and wanted to show it by casting the negative space within one. However... the plaster would not come out! Going to try soaking them, otherwise they will just be ornaments and not useable.