Okay, I'm going to risk being shouted at here... I have been through the archives (not all, but a hefty chunk of it - including the discussion around msg 1100 about through-plating). When the subject of conductive silver paint arises, it usually gets sidetracked into the use of activators, copper plating etc, but nobody so far seems to have tried using silver paint to create the actual body of the vias. According to the manufacturers, a typical paint has a resistance of 200 microOhms per cm, and it can be thinned. 2 or 3 applications should be enough. Whilst it is expensive, I would imagine 3 grammes of the stuff would go a heck of a long way. I have used through-pin style vias for years, and I would like to move on to play around with multi layer laminated boards etc (one of these years I may get around to BGA). So, has anyone tried it, or am I going to be the one to save up for a bottle of silver? Which reminds me, is it feasible to "solder" components with silver loaded epoxy? Obviously reworking would be a $"£%! of a job... Mike
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making vias (was: Re: Plating thruholes.)
2004-08-15 by Mike
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