I’m looking to make some silicone molds from a few 3-D master prints. Does anyone have any experience with making 3-D models that are ready to be used as a master for pouring molds? I’m looking to make a mold of my first geometric planter as a test run. The only thing I’m missing is a base and a support shell around the planter to pour the mold. I’ve been looking into using melamine boards in place of a 3-D printed shell for it to be more cost effective. My problem is figuring out how to fasten the 3-D printed master down onto the melamine without it moving and building a mold box around the master. Ultimately I will be using the molds to cast resin, concrete, etc. A friend suggested designing the prints with holes on the bottom to allow for a screw to hold it in place on the melamine board. I would like to avoid glueing the master to the board in case I need to be able to take the master off. I know this all sounds a bit confusing but I’m hoping that some folks on here have a bit of experience in mold making will know what I’m talking about. Here are a few photos of my planter and examples of a mold box and support shell from other people. I’ve been struggling with getting my planter printed since I need to figure out these steps first. Please let me know if you can help. Thanks in advance!