I found the link I was looking for regarding the sling shot effect. Spin casting, I know spin casting is used predominantly by the jewelry industry due to the inherent small size of the castings. It would probably work wonders for our scale too. Making a spin caster would be fairly easy. http://www.conquestind.com/spinpict.htm A possible solution to good wax castings. For larger stuff I have always rolled the rtv or silicon mold manually . I usually make the mothermold with metal nuts incorporated into it if its a large mold so it can be attached to a rig allowing me to rotate the mold ( non weight bearing). Even for smaller molds I by habit create a mothermold for the rtv. This keeps its integrity by using keys on the rtv into the mothermold. Silicast had a great fibreglass epoxy mothermold mix that sets fast and is light . I use and love they're silicon rubber mold material. http://www.smoothon.com/Products/liquidrubber.htm Cheers Ferdinand
