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Term:  hot glue



Hot glue is purchased in the form of sticks which are loaded into a special heat gun. Squeezing the trigger of the gun produces molten glue from a nozzle.
Although it can be stringy, hot glue is get good for sticking materials where an epoxy glue would otherwise be needed e.g. wood, cloth, metal, etc. However the convenience of having it available on demand, in just the amount needed, at the press of a trigger, is clearly advantageous.
Provided the foam is fairly dense (such that the heat does not melt it), hot glue can be used with polystyrene foam. It also has its uses is small scale casting where it can be squeezed into a suitable mould.
Hot glue has a waxy appearance but takes paint surprisingly well.

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