The weller hot air wha 900 is especially user friendly and resistant it is ideally suitable for soldering repairs in assemblies as well as for hot air applications like shrinking warming up of metal parts during maintenance or mounting through the exact continuous regulation of the temperature and the hot air quantity the station achieves optimum results in every kind of soldering work between 50 550 c the wha 900 heats very quickly and also enables precise and temperature controlled deso