Step-by-Step Guide to Lubing Mechanical Switches for Sound, Smoothness

1. Tools & materials checklist

Have the right kit before you start: a switch opener (or pliers/clip jig), switch lube matched to switch type (Krytox 205g0 for linear and Krytox 105/205 blends for tactile modding), a thin brush for precise application, and a supply of stems/felt/paper towels for cleanup. Include spare springs, optional switch films, a spring clip or small container for bag-lubing springs, and a clean, well-lit workspace. A dedicated tray or ice cube tray works great to keep tops, bottoms, springs, and stems organized so you don’t lose parts mid-session.

2. Prep

Begin by removing keycaps and switches from the board: hot-swap boards let you pull switches cleanly; desolder if required for soldered boards. Ground yourself to avoid static discharge and work on a non-slip mat to keep tiny parts from scattering. Label rows or take photos if you’re doing a full-board mod so reassembly preserves layout and switch types.

3. Disassembly

Use the switch opener or clip jig to carefully open the housing, separating the top housing, stem, spring and bottom housing, keep each switch’s parts together if possible. Lay pieces out in a logical order: top housing, stem, spring, bottom housing; use compartments or labeled piles to avoid mix-ups. Handle stems and springs gently, bent springs or scratched rails change feel, so treat this like delicate surgery rather than a quick wrenching.

4. Lubing technique

Apply a thin, even coat of lube to the stem rails and slider areas, too much globbing will mute tactility and create gunk. For linear switches, use a lighter coat on the rails and a light dab on the spring; Krytox 205g0 is the common go-to for smooth, quiet linears. For tactile switches, avoid lubing the tactile bump area unless you want to intentionally smooth the bump; use Krytox 105/205 blends for controlled tactile modding where a light touch preserves the tip while smoothing the rails. Use a small, thin brush to load minimal lube, drag the brush once along each rail and a tiny dab on the spring, or bag-lube springs with a spring clip to give them a light, even coat without overdoing it.

6. Tips & warnings

Less is more, over-lubing kills tactility, makes switches sluggish, and leads to messy cleanup nightmares. Match lube viscosity to switch type: heavier greases for linears, lighter blends or thinner coats for tactiles, and avoid lubing click-bars on clicky switches because lubing often destroys the intended click. If you plan films, use them to reduce wobble before lubing for better results; films plus light lube usually sound more refined than heavy lube alone.

7. Troubleshooting

Sticky keys often mean excess lube, disassemble, blot excess with paper towel or cleaning cloth, and rewash the parts with a degreasing cleaner if needed to fully remove gummy residue. If actuation feel changes unexpectedly, consider swapping the spring or stem, spring swaps and different stems are common fixes and can restore the intended edge or weight. Rattly stabilizers aren’t a switch lubing problem alone; address them with band-aid mods, dielectric grease on stabilizer wires, or housing mods to reduce ping and rattle.