The Shop > Electronics & IC Programing
Making a home brew printed circuit board
Chuck in E. TN:
Thanks, Andy. I think I will go with HHS. I have a Jacobs 1/4 " chuck on a straight shank for small bits, and think I will standardize the holes at .043" or there abouts. I have a few spare drill bits in a small glass vial that were my Dad's. I'll have to measure them as I don't remember the size. I only need 1 board at the moment, maybe 2.
I think the board material in question may be phenolic, it looks brownish. We'll see after etching!.
Chuck
John Rudd:
I use a Hobbycraft drill press with a typical 'Dremel' (Hobbycraft MB1) :dremel: type tool for drilling...With good results without breaking drill bits....... :clap:
SRBP (Synthetice Resin Bonded Paper) is forgiving for HSS compared with FG........ :coffee:
Good luck with your board.... :thumbup:
andyf:
If it's brownish under the copper, it's probably phenolic, Chuck. The fibre glass stuff is usually grey.
If you didn't etch a little dot in the copper where each hole is to go to help get the drill started in the right place, you will soon wish you had.
I recall drilling about 100 holes in a home-etched board for a 144 to 50Mhz transverter by hand with a pin vice during a particularly long AGM at the local cricket club. It was more discreet than doing a crossword during the meeting.
Andy
John Stevenson:
Chuck, what mods have you made to the Ardunio I'm really interested.
Chuck in E. TN:
John, I'm following Kwackers build on cnczone which is based on the 18F452 PIC, not arduino.
It's just taken me a long time to get a good toner transfer to the copper for etching. A fellow named Lucas re-drew Kwackers origional board layout to make the traces wider and easier for dummies like me to make. As I'm now retired and don't have access to multiple brands of laser printers, I took the improved artwork to Office Depot and had them print it for me. First attempt at a clothes torn transfer worked great. I have 6 more coppies left if I decide to make a few more.
Chuck
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