DIY Pcb Hand Drilling Machine

Step 3 Assembly

Now start assembly
take the nylon pulley and try to create internal threads.for this u don't need any spl. tools.take 3mm screw and tighten it in to the pulley with little force.as the pulley is made of nylon internal threads will be created by that 3mm screw.now unscrew it and fix the mounting screw firmly.
then fix the previously made drill bit inside the mounting screw.now insert this hole assembly in to the motor shaft.
*If my explanation is not clear please follow the pictures below.

Voilah! your home made drilling machine is ready.before going to drill ur PCB,test it on a waste piece.so that you can confirm which drill is good and with which ur getting good finish.

some points that i want to repeat
1.This is not professional type drilling machine.
2.hole finishing will depend up on ur tool(i prefer square type drill).so make it carefully
3.try to get motor with High RPM and some good torque.

Have a look at the drilling operation sample video

As i said before this is my first instructable,so let me know abt my mistakes.
Regards

Comments

[arupbsk]

I'll also build a such drill.
But is there any wat to attach our normal titanium drillbits into the motor?