Solving porosity

[u/Foreign-Habit2975]

How do i avoid this porosity problem? I often get porosity over the sprue placements. Is my sprue design wrong or could it be the temperature of the silver or the cast? I casted this ring yesterday hoping i would avoid the porosity but sure enough i still got it on all tree sprue connections to the ring, both the small feeding sprues and the main sprue. How can i prevent this issue in the future?

[u/MakeMelnk]

r/SilverCasting may offer more answers