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Friday, August 27, 2010

I don’t need no stinking drill press!

That’s right. I drill my holes by hand. Yes, I even own a rather large drill press, but I find it easier to achieve the precision I’m looking for with a simple hand drill.

This is one of the 7 segment display boards for the scoreboard. I did the layout in Eagle and then used the toner transfer method to put it on some 4”x6” copper clad I bought on Ebay. I use a solution of diluted HCl and H2O2 as etchant. It works great and is a bit greener than the Ferric Chloride method. Do a search at Instructables. There’s a couple instructables on this method of etching.

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