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Subject: Re: [Homebrew_PCBs] Re: Copper Clad Board..... holes

From: Kevin Byrne <kbyrne10@...>
Date: 2016-11-23

Now I understand your cross hair system except I use Eagle freeware. Oval pads with a round drill hole in the center. Drill bits are .019, .025 .035 & .040. Nice pictures thou.
Green TRF sticks good to toner transfer & positive development brds but not negative development. What did you do to protect those traces and pads in etchant if I may ask?