So today I needed to do some hasty wood repairs. Heard about the "wonders" of super glue and baking soda... Well, my goodness, it is quite amazing!
It hardens instantly, very hard, and, oh yes, it is exothermic (and it does get quite hot), but it creates an admittedly difficult to guide shape result that it is sand-able and paint-able.
Only used it on porous material like wood, but I can already see that this "Heath Robinson" solution has a lot of potential!
@ilneill oooh never heard of mixing these
@BarbaraEdwards Super glue can also be mixed with baking soda and carbon (think powdered graphite or charcoal) for a harder, but obviously, blacker result.
However, all this is not without dangers. It gets hot, and there are fumes. I was working outside - I would not consider doing this inside! Take care when playing with even household chemicals!!