MANUFACTURING MONDAY – SMT Manufacturing – tips & tricks – Hot tweezers. The MX500 soldering station is particularly good for hot tweezing, it has two ports on the front. One connects to the iron and the other we connect to a hot tweezer. You can switch out tips just like with the soldering wand. The system is called MX-PTZ and you can check out Metcal’s page for all the various tips you can get for reworking different-sized parts.