Recently began casting using sirayatech royal blue castable resin and prestige optima investment (38:100). My kiln is programmed 300-700-1350-1025 (all with ramps and holds). I always pour at around 1000C, sterling is poured at 1025C. For some reason I always get these crevices/pits everywhere. They’re on the shank and sides of the skull. Any ideas/pointers?
Hello, so I have been delftclay casting wax rings etc with decent success however I have run out of surfaces to wear jewellery on and it’s a friends birthday soon so I’d love to make a pass the pigs set.
It’s two tiny pig figures that you roll like dice but I haven’t found a way to clay cast the offset leg shape and delicate ears.
Anyone done anything similar who would like to share knowledge?
Hi everyone, I need your analysis to explain to me why despite all my tests of casting shaft, channel size, layout, casting temperature, cylinder and new metal, I absolutely still have these same porosity defects on all my parts. This is an example of my latest font test, I don't understand and AIs are misleading me, I'm just regressing with them. If someone has an expert opinion, maybe the photos will help you understand the problem and help me, as well as many others who have the same problem.
For this example, here is what has been done:
Argentium 940: 990°
Cylinder: 580°
Optima Prestige Coating
Resin: Bluecast X wax
Burnout: classic burnout cycle for resin of 12 hours
Vacuum casting, cylinder returned 30 minutes before casting for gas evacuation.
Casting on electric furnace without Argon or Borax.
This is a necklace I have since a couple months ago and decided to use yerterday evening, it was completely shiny and beautiful but this morning that I woke up it's all yellow and tarnish! I don't know how or why it happened and how to clean it, tips? :(
Made a few of these today just wanted to show before and after polishing, any tips appreciated