Project
Soldering a mechanical keyboard: the tools you need first
What you need to solder or desolder mechanical keyboard switches: iron, tip, solder, desoldering tools and fume control, with picks for a 120 V bench.
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Short answer
Soldering keyboard switches is repetitive through-hole work: usually two metal pins per switch, often well over a hundred joints. A temperature-controlled iron with a medium chisel tip, flux-cored solder, and a desoldering pump or wick covers it; Adafruit notes that a flat chisel tip works well for through-hole parts. Add fume extraction, because that is a lot of flux smoke.
Key facts
- Suggested tip system
- T12 or C245 station with a medium chisel tip[1]Our suggestion: switch pins are through-hole joints, and Adafruit says a flat chisel tip works well for through-hole parts.
- Key safety step
- Use fume extraction and keep your face out of the smoke[2]HSE says rosin-based solder flux fume is a top cause of occupational asthma and advises extraction at the source.
Watch out for
- Check for hot-swap first. Hot-swap boards hold switches in sockets, so you only need the iron if a socket itself fails.
- Do not use acid-core solder. Canfield, a solder maker, says acid-core solder is not recommended for electronics because its residue is corrosive.
- Start in the normal range, not at maximum. SparkFun teaches 325-375°C for beginners: heat the pad and the pin together, then feed solder.
- Desoldering a whole board takes time. SparkFun calls a solder vacuum a great tool for clearing through-holes; a powered desoldering gun is the upgrade if you swap switches often.
What fits
Product details below are the seller's own description unless a source is shown. Pick the variant named for each item.
Station (T12 option)
KSGER T12 STM32 V3.1S soldering stationChoose the station set, then select the 110 V version for a US outlet; the listing names both 110 V and 220 V.
T12-format tips (Hakko T12-compatible), not Hakko parts; check which tip shapes the set includes. The store is named KSGER Official Store, but we found no KSGER website confirming it.
Sold by KSGER Official Store
Station (C245 option)
YIHUA 982-III precision soldering station (C115/C210/C245)Choose the 982-III C245 set, 120 V US variant.
The C245 set is the seller's description; a YIHUA-branded spec page lists only C115 and C210 handles for the 982-III, so check the handle and 120 V rating in the listing. Pick one tip system and stay with it.
Fume extractor
YIHUA 948DQ-I fume extractor with helping handsChoose the US plug variant.
The listing does not state the input voltage or filter performance. Check the rating label, and ventilate the room as well.
Essentials: a temperature-controlled iron or station with a medium chisel tip, 0.5-0.8 mm flux-cored solder, a desoldering pump or solder wick, a stand with a tip cleaner, a heat-resistant mat, and fume extraction or strong ventilation.
Optional upgrades: a powered desoldering gun if you often swap switches on soldered boards, and a PCB holder to keep the board steady.
Pick one tip system for the station and stay with it; the T12 and C245 pages explain what each one fits.
Questions
What tip should I use for keyboard switches?
A medium chisel tip. Switch pins are through-hole joints, and Adafruit says a flat chisel (screwdriver) tip works well for through-hole parts; a fine conical point heats them slowly.[1]
Leaded or lead-free solder for a keyboard?
Either works. Kester lists 63/37 leaded solder at 183°C and lead-free SAC305 at 217-220°C, so lead-free needs more heat. If you use leaded solder, wash your hands before eating or drinking (HSE).[3][4]
Do I need a soldering station for a keyboard?
You need temperature control, whatever the form. A station or smart iron lets you hold a steady temperature in SparkFun's 325-375°C learning range; a basic plug-in iron without control gives you no way to set it.[5]