When sourcing a medical plaster saw, prioritize the oscillation frequency, which should typically range between 10,000 to 18,000 oscillations per minute (opm) to ensure efficient cutting of synthetic or plaster casts. Look for high-torque motors that maintain speed under load. Additionally, ensure the device features low noise levels (≤70dB) and minimal vibration to reduce operator fatigue and patient anxiety. The inclusion of a vacuum extraction system or a port for one is critical for maintaining a sterile environment by capturing fine dust particles.