SDG #209 Metcal GT120 GT90 Adjustable Temperature Soldering Station

Metcal’s reputation was built on fixed temperature Curie point cartridges, so the GT series is a notable departure: a conventional adjustable temperature station wearing Metcal branding. This review looks at the GT120 control unit alongside the lower powered GT90, and the central question is whether the premium price still buys something meaningfully better than the flood of budget cartridge stations that now dominate the hobby market.

The handpiece gets close attention, including how it compares in size, balance and grip comfort against Metcal’s own MX and CV series pencils, plus how the tip cartridges seat and change. The supplied accessories, stand and sponge arrangement are examined for build quality rather than just listed, since these are the parts a user touches every day.

On the control unit side, the review covers the interface, temperature setting behaviour, lockout and calibration options, and whether the display and controls suit bench use. Practical soldering follows: thermal recovery on larger joints, behaviour with leaded and lead free work, and how quickly the tip reaches setpoint from cold, which is where thermal mass and control loop tuning show up more honestly than in specification sheets.

The teardown is the most revealing section, exposing the power supply topology, transformer or switching arrangement, control electronics and general construction standard inside the case. That internal quality is the fairest way to judge whether the asking price reflects genuine engineering or mainly the badge.

Useful viewing for anyone weighing a GT120 or GT90 against an established Metcal MX system or a mid range alternative, and for existing Metcal owners wondering whether tips and accessories carry across.