1) AG Anderson implemented a new blind riser venting system using venting chambers to improve casting yield and reduce costs. The chambers provided an unobstructed passage for atmospheric air to access the liquid metal, preventing vacuum pockets in blind risers. 2) Testing showed risers using venting chambers remained open at the top and had significant metal loss, demonstrating improved feeding efficiency over unassisted risers. This led to reduced pouring weights and increased yields from 51% to 66.7% for one casting. 3) Modifications including using exothermic material in the chambers or applying pressure to the liquid metal surface could further increase yields by maintaining higher temperatures or extending feeding distances. Future work will develop press