I have just started casting earlier this year, I understand it is about a try and fail game, but for this one I think I need your help.
I own a Formlabs2 3D printer, on which I printed several pieces in Castable Wax Resin which I later set on a wax casting sprue. I used Plasticast investment, in a 38/100 ratio for water vs investment, waited for 2 hours before setting it in the kiln. I cast with an italian Bailo&Aldo vacuum machine - EasyCast and I respected the 8 hour burning schedule the provider from whom I bought the equipments (and who installed them in my workshop) recommended. The provider recomended to cast at 650 Celsius flask temperature and 950 Silver temperature. My flask dimensions are rather small - 9 cm in diameter/12 cm tall.
However, at the end of it, the large pieces turned out great, where the smaller ones (1mm thickness) have huge porosity. My plan was to cast once in Castable wax, then make vulcanised molds and inject wax, but these are not usable this way.
I kept reading several threads on this forum and I think either my metal might have been to hot, or the investment deteriorated where the small pieces were (which probably burned out quicker).
What do you suggest?