With each adjustment you do, make the assumption that your lab partner is a patient in the clinic. Regardless of the type of heater, keep the frame moving. Keep the frame close to the surface of the glass beads. The closer to the pan you place the frame, the higher the temperature and the more likely it is that you will burn the frame 3. Heat only as much of the frame as necessary to make a bend.
Different materials require different amounts of heat.
After adjusting, let the frame cool down a little before placing it in cold water. Under any circumstances, do cool the frame to room temperature before placing it on your patient. Do adjustments by hand whenever possible. This will help to reduce the chance of damaging the frame. Select a frame for your partner to adjust on you.