Rob Olling Posted January 19, 2004 Report Share Posted January 19, 2004 I was thinking about Making tapered plaster pins for use on plaster molds. Can I cast plaster pins in an unsealed plaster mold without mold release? If I have to coat the mold with mold release, what can I use to release that will clean off the part so it gets the best bond when plaster is poured over it as a part of the mold? I plan on placing 4 plaster pins into a square pan and then pouring in the plaster for the bottem half of the mold. I have heard the marble idea but they take up a little to much room in a few of the small forms I want to try to make molds in. Also I dont want loose parts(marbles) to loose. Item 2, does any body pour the bottem half of their mold then seal it and then place the master back in and pour the top to get small details embedded deeper and not filled so badly by the sealer. Then seal the top half last. Just thinking out loud Quote Link to comment Share on other sites More sharing options...
Big Splash Posted January 19, 2004 Report Share Posted January 19, 2004 Rob, you remove the marble and cast the second half of the mold so it fills the cavity formed by the marble. There is no loose part in the finished mold, just a marble shaped protrusion on one side of the mold that fits into a marble shaped cavity on the other. Quote Link to comment Share on other sites More sharing options...
Rob Olling Posted January 19, 2004 Author Report Share Posted January 19, 2004 Ya I got the idea of removing the marble but wanted something smaller. I am going to try a few small castings that are onlt about 2.5" X 1.5" and marbles will take up way to much room. Quote Link to comment Share on other sites More sharing options...
Big Splash Posted January 19, 2004 Report Share Posted January 19, 2004 Round head screws come in any size you need. Quote Link to comment Share on other sites More sharing options...
Fish_N_Fool Posted January 20, 2004 Report Share Posted January 20, 2004 you can also just drill a small hole in a few spots about an 1/8" deep one the first side coat with a mold release and then pour the other side. I have used this before and it works well. Just don't make them to small or to deep or they brake off to ez. Quote Link to comment Share on other sites More sharing options...
