Some notes about construction

[LarryD]

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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 PC…

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A jig to aid in making core bit pads. The ‘Core Bit Drilling Jig’ makes drilling pads in copper clad PCB material quick and easy. Attached images show all the materials needed and the use of the jig. Your 'work' is sandwiched between a drilling template and sandpaper. The jig holds the ‘work piece’ secure while drilling the circuit pads. Silicon carbide sandpaper bites into the ‘work’ so it does not move. Light downward pressure on the drilling template is all that is needed to hold the ‘…