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If a syringe is used, it would be possible to fill small pits where components are to be placed, to improve conductivity. This would not need any heating equipment, but would vastly increase the area of contact with the component leg and so lower resistance. I believe this may be a promising route. Currently conductive paints are very expensive, but advances in conductive polymer research may well produce a high-conductivity elastomer as a replacement. Even so, the additional material cost may initially increase the ease of replication and proliferation of a RepRap. Would it be too hard to try it as a material for deposition in the same way that Dr. Adrian Bowyer is currently deploying Wood's Metal? I'm sorry to ask; I do not yet have timely, affordable access to a suitable FDM machine or I'd do it myself. Vik :v) -- Vik Olliver <[log in to unmask]> Diamond Age Solutions Ltd.