Barker] writes up an interesting product called Wire Glue. This conductive adhesive is a paint-on alternative to soldering. At first it seems like a bizarre product but we can think of a few uses.

While soldering such parts is a challenge ... In his case, the parts are a couple of SMD ribbon cable connectors and some chips in what appear to be TQFP packages. [rahmanshaber] used FreeCAD ...