I finally got around to looking at Roberts casting links on the blog. I thought I would share my recent, loosely related, adventures. I made an injection molder earlier this year and I have been making molds with MeshCam and making a few items.
My raw materials for molding come straight out of the recycling bin. Some is even saved from the garbage because my recycling company does not accept polypropylene.
More items I have made and more information about the process is available on my web page:
Home Plastic Injection Molding
All of the items on the linked page were made using MeshCam. Some imported as STL files and some as grayscale images.