🚀 go-pugleaf

>I read with interest the discussion not so long ago about the
>"Green Layer on Circuit Boards". What I want to know is if I
>produce a double sided board at home using the normal UV
>sensitive boards how do I solder IC sockets/IDC plugs etc. to it
>if it is not through plated ? If I can get to the pins on both
>sides, then its not a problem as I can just solder both sides
>but otherwise I am stuck ! Is it possible to get the solder to
>flow through to the other side on a non through plated board ? 
>

In the old days when through plate was a new process (pasting dollar bills on 
the board was cheaper) standard practice was to 'pin' a board. Those pins are 
still available.

Basically, you just add interconnections where you can physically get at 
them. A pin is popped in the hole and soldered both sides. There are 
insertion tools (try doing 1000+ pins a day) and pins in long strips.

There are three types of pin (all shouldered): straight; tapered so they jam; 
winged. The middle type is probably best but get your holes sizes correct.

Hollow 'things' designed for directly inserting in oversize holes exist -- at 
a price. 

Skeleton IC socket strips allow both side soldering. 

  TC. 
    E-mail: tchannon@black.demon.co.uk or tchannon@cix.compulink.co.uk