How to Lube Switches: A Step-by-Step Guide

Lubing switches is the single most transformative mod in the hobby. A scratchy, rattly switch can become smooth and refined with nothing more than a thin film of grease applied in the right places. It’s also the mod that beginners most often botch — usually by applying too much, in the wrong spots, with the wrong product.

This guide walks through the whole workflow, from tools to technique to the handful of mistakes that turn a careful afternoon into a tray of mushy, dead switches.

What You’ll Need

Lubing is cheap to start. The essential kit is small:

• A switch opener (or a flathead, but an opener is far less frustrating)
• A small brush — a size 0 or 00 painting brush is ideal
• A pot of lube (more on which one below)
• A switch tester or tray to keep parts organized
• Patience, because this is slow work

If you’re doing a full board, a stem holder and a lube station speed things up enormously, but neither is mandatory for your first batch.

Choosing the Right Lube

This is where people go wrong before they even start. The lube has to match the switch type.

Switch type	Typical choice	Why
Linear	Thicker grease (e.g. Krytox 205g0)	Maximum smoothness, no feedback to preserve
Tactile	Thinner oil (e.g. Tribosys 3203)	Keeps the bump crisp instead of muting it
Springs	Light oil or a bag-lube method	Kills ping without gumming travel

The cardinal rule: never put thick grease on a tactile switch’s stem legs. It rounds off the bump you bought the switch for. When in doubt, go thinner.

Step 1: Open the Switch

Press the switch into your opener (or pry the four housing clips with a flathead) and separate the top housing from the bottom. Inside you’ll find four parts: the top housing, the stem, the spring, and the bottom housing with its leaf contacts. Keep them sorted — mixing stems and housings across batches creates inconsistency.

Step 2: Lube the Bottom Housing

Lightly brush the two rails the stem slides along, and the small area where the spring sits. A thin, even coat is the goal — you should barely see it. Avoid the metal leaf contacts entirely; lube there can cause connection problems.

Step 3: Lube the Stem

This is the part that matters most. Hold the stem and lightly brush the two long rails (the sides that contact the housing) and the bottom pole. For linears, you can be generous on the rails. For tactiles, keep lube well away from the legs that create the bump — brush only the sliding rails.

The mantra is thin and even. If you can see a glob, you’ve used too much.

Step 4: Handle the Spring

Springs cause “ping,” that metallic ring some switches make. The fastest fix is the bag method: drop your springs in a small bag, add a few drops of light oil, and shake until coated. It’s quicker than brushing each one and the coating doesn’t need to be precise.

Step 5: Reassemble and Test

Set the spring on the bottom housing, place the lubed stem on top, then snap the top housing back on until it clicks. Press it a few times. It should feel noticeably smoother and quieter than before. If it feels mushy or sluggish, you’ve over-applied — open it back up and brush some away.

Common Mistakes to Avoid

• Too much lube. The number one error. Mushy, dead-feeling switches almost always mean over-application.
• Lubing the leaf contacts. Causes intermittent or dead keys.
• Wrong lube on tactiles. Thick grease flattens the bump.
• Inconsistent amounts. A board where every switch was lubed differently feels uneven. Develop a rhythm and stick to it.
• Rushing. This is meditative work that punishes haste. Do a test batch of ten before committing to ninety.

The Takeaway

Lubing is simple in principle — thin, even coats on the sliding surfaces, the right product for the switch type — but it rewards patience and punishes excess. Start with a small batch, match your lube to your switch, and resist the urge to slather it on. Do that, and you’ll turn an ordinary switch into something that feels custom.