Reviewing how to make a semi permanent prototyping PCB using coring bits.
In this case ‘Thin Wall’ 9mm, 6.5mm and 5mm jewelry diamond coring bits are used to make the PCB pads.
It is important to spend the time to make a paper layout from the circuit schematic.
A 1:1 image of the layout is made using your favorite vector drawing program.
Make center punch marks on the copper clad PCB for each pad.
To prevent the board from moving on the drill press, place a silicone nonslip pad under the PCB.
Countersink/drill pads with the coring bits, about 1/3 the thickness of the PCB.
Add flux and solder the complete surface of the PCB.
Solder components as per your layout.
Note: 0-ohm 1206 SMD resistors are used as jumpers.