First-Aid Kits for Circuit Boards ®
Haverhill, MA 01835 USA
A Circuit Technology Center Company
110-4106 Micro-Drill System

This versatile tool is ideal for milling, drilling, grinding, cutting, and sanding circuit boards. Use it to remove coatings, cut circuits, cut leads, drill holes, and perform many other procedures using interchangeable bits.

Unlike most hand-held tools, the Micro-Drill has a tiny, high-speed DC motor in the handpiece, eliminating bothersome drive cables and giving the technician precise control. A separate power supply keeps the handpiece lightweight and reduces fatigue.

High quality construction for delicate work.
Flexible telephone-style cord eliminates bothersome drive cables.
Quick change chuck for easy bit replacement.
Versatile forward, reverse, and variable speed up to 40,000 RPM
Lightweight, ergonomically designed hand piece reduces fatigue.
Dual voltage, 120 VAC, 220 VAC. A plug meeting the local requirements may be needed.

  1. Connect the power cord to the power socket.
    110-4106 Micro Drill System
  2. Connect the foot controller cord when using the foot controller.
  3. Connect the handpiece cord.
  4. Check the power switch setting. Set for either 110 volts or 220 volts.
  5. Turn the handpiece handle to open the chuck, insert a tool or ball mill, then lock the handpiece chuck by turning the handle.
  6. Set the rotation using the rotation switch.
  7. The Handpiece is now ready for operation. The speed is adjusted using the Speed Control Dial.
  8. Depress the foot pedal and gradually turn the speed control dial until the desired speed is attained.
  9. It is normal for the handpiece to warm up slightly on continued use. Do not expose to water or use in wet locations.
Suggested Maintenance
  1. Carbon brushes in the handpiece motor are designed for long life, approximately 1,000 hours. Carbon brushes should be replaced periodically, approximately once each year.
  2. Wipe the handpiece only with isopropyl alcohol and avoid getting wet.
First-Aid Kits for Circuit Boards ®
Haverhill, MA 01835 USA
A Circuit Technology Center Company
110-4106 Micro-Drill System

Changing Handpiece Collet
  1. Open the chuck.
  2. Using the chuck wrench tool, place the triangle section of the wrench over the top of the chuck, turning counterclockwise until the chuck is completely unscrewed and loosened from the spindle.
  3. Insert a different size chuck or replacement chuck. Use the chuck wrench tool and turn the wrench tool clockwise until the chuck is completely tightened.
  1. Do not expose the handpiece to water.
  2. Do not oil, lubricate or grease the handpiece.
  3. Do not open the collet while the handpiece is running.
  4. Do not switch forward to reverse direction until the motor has completely stopped.
  5. When the unit is not in use, the power switch should be turned off.
  6. Do not run the handpiece without a bur or drill properly locked in place.

Instructions and Procedures
Guide Page
2.3.1 Coating Removal, Identification of Coating
2.3.5 Coating Removal, Grinding/Scraping Method
3.3.1 Hole Repair, Epoxy Method
3.3.2 Hole Repair, Transplant Method
3.4.1 Key and Slot Repair, Epoxy Method
3.4.2 Key and Slot Repair, Transplant Method
3.5.1 Base Material Repair, Epoxy Method
3.5.2 Base Material Repair, Area Transplant Method
3.5.3 Base Material Repair, Edge Transplant Method
4.2.4 Conductor Repair, Surface Wire Method
4.2.5 Conductor Repair, Through Board Wire Method
4.2.6 Conductor Repair, Inner Layer Method
4.3.1 Circuit Cut, Surface Circuits
4.3.2 Circuit Cut, Inner Layer Circuits
4.3.3 Deleting Inner Layer Connection at a Plated Hole, Drill Through Method
4.3.4 Deleting Inner Layer Connection at a Plated Hole, Spoke Cut Method
5.2 Plated Hole Repair, Double Wall Method
5.3 Plated Hole Repair, Inner Layer Connection