Surface finishing for precision castings
Shot / bead / sand blasting — fast, uniform matte finish; removes shell wash, sand, scale; good pre-step for plating or painting. Use small glass beads for smoother results; coarse grit for scale removal.
Vibratory / barrel (mass) finishing — excellent for burr removal and edge radiusing of many small parts; economical for batches; finish depends on media + cycle time....
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