Blow Holes cavities with smooth walls, singularly or in groups.
Low casting temperatures are often the cause. Benefits may be obtained by increasing mould permebitity. Reduce fines or add coarser new sand. Reduce organic additions to the sand.
Blow Holescavities with smooth walls, singularly or in groups.Low casting temperatures are often the cause. Benefits may be obtained by increasing mould permebitity. Reduce fines or add coarser new sand. Reduce organic additions to the sand.