In this instructable I am going to show you how to make simple pcb drill out of household materials.
Step 1: Materials
You will need:
Disassemble the old pen that you have and use this part.
Put a little super glue on the part that you took from the pencil on the motor and then insert the motor shaft. It should fit tightly, if it does not, roll a little paper on the motor's shaft.
Then solder the wires to motor.
Insert the drill into the part of pen and glue it.Drill must be around 0.5mm or larger.