A lot of my work involves creating fine detailed basket and cage structures out of metal. Usually 20 ga square wire or smaller. I am making rubber molds of these structures with the intention of casting them, many at a time.
How can I make sure these castings go smoothly, with all of the spaces being filled up? I know molten metal sometimes has a hard time flowing through delicate structures, but I also know it is possible. If anyone has some experience to draw from and advice to give me before I start the trial and error process, I would love to have it.
I am using a vacuum casting setup, with an electro-melt. I will be doing this in sterling silver at first. Should I pour at a higher temperature? Should I do something special with the burnout cycle? etc…