Hi Vince, yes your correct it is NOT hot glue or craft glue. It is an epoxy-based product that does not harden untill processed.

95% of all ARFs are built this way, weather or not its woth a darn is up in the air.....Personally I don't use it for my products, but then again I charge way more than your typical ARC-ARF.

It just the standard way of doing things with mass production of airframes.