Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

I recently did a double a sided board by using two 1/32 single sided boards. Transfer top onto one, bottom onto other, etch, drill. You can even drill both at the same time if you drill alignment holes in each first, then pin them together with old drill bits. I didn’t glue them together, I use a block of polyiso foam insulation, push short lengths of wire thru the vias in both boards, and into the polyiso, solder all on the top side, flip the boards over, pushing the wires back into the polyiso, and solder the bottom side. Don’t clip the wires until both sides are soldered, or they have a tendency to slip thru when soldering the back side. The wires thru the vias end up like rivets holding the boards together.This also allows you to reflow SMD’s on both sides before soldering them together. It takes a hard look to even tell that there are two boards.

RD

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