Caig SILVER PRINT CONDUCTIVE PEN, Circuit Writer

Precision Conductive Ink Applies instant traces on most surfaces (epoxy, glass, plastic, metal). Draw traces on circuit boards, repair defective traces, make jumpers and shield electronics, design prototype circuits and repair rear-window heater traces. Dry time 4-6 hours at 70 degree F or 15-20 minutes curing 6" away from a 40 watt light bulb. Search Words, Liquid Solder Soldering Glue Paste Conductive.