George,
I found some info on silver paint used in scanning electron microscopy. It appears to be similar to or the same as what Caswell supplies. Here is the instruction they offer on drying.
Drying: The paint was formulated to be air dried to a tack-free state within 30 minutes. Adequate conductivity and adhesion are achieved after 24 hours in air at 25 °C. Adhesion may be improved if necessary and the cure accelerated by force drying at 100-150 °C for 15-30 minutes.
It behooves one to allow this stuff to CURE completely before attempting plating. Some solvent-based paints can take a week to cure without baking.
Let me know and I can forward you more info on the properties and characteristics of silver paint.
Kind regards,
Ken
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