HOW TO DRILL A HOLE IN A ROCK OR STONE FOR CRAFTS AND JEWELRY MAKING ...
How to adjust the trigger pressure strip of the rock drill
If you need to increase the pressure, turn the adjustment screw on the pressure regulator clockwise. If you need to decrease the pressure, turn it counter - clockwise. Make small adjustments at a time, and then check the pressure again using the gauge. [pdf]FAQS about How to adjust the trigger pressure strip of the rock drill
What is a variable-speed trigger on a drill/driver?
The variable-speed trigger on a drill/driver operates on a simple principle: the harder you squeeze the trigger, the faster the drill bit or driver bit rotates. This system allows for a range of speeds, from slow to powerful. Using a variable-speed trigger offers several advantages when working with a drill/driver:
How do I adjust the clutch settings on a drill/driver?
Use lower clutch settings for softer materials, and increase clutch settings for harder materials. Adjust the clutch in combination with trigger control for optimal results. Many drill/drivers feature a speed selection switch, typically offering low and high-speed ranges.
Why do drills have adjustable clutch settings?
Most drills/drivers have adjustable clutch settings that work alongside the variable-speed trigger. The clutch helps prevent overdriving screws by disengaging the motor when a certain level of resistance is met. Use lower clutch settings for softer materials, and increase clutch settings for harder materials.
How do you use a variable speed trigger?
While many users tend to use the variable-speed trigger at the halfway point, Clement recommends using two primary speeds: on and off. This technique involves quick, controlled bursts of power rather than maintaining a moderate speed. Set the bit by applying short, quick trigger pulls. Drive the screw using full trigger pressure.
Drill hole in rock with dremel
Unplug the Dremel and attach the appropriate sized drill bit. Begin drilling the material with the Dremel set on a slow speed. Hold the Dremel perpendicular to the material at all times. Once you start the hole, you can increase the speed to quicken the drilling process. [pdf]