How to lube switches

What is Switch Lubrication?

Lubricating mechanical keyboard switches is a popular modification among enthusiasts aiming to improve the feel, sound, and overall typing experience. Mechanical switches, unlike membrane keyboards, utilize individual physical mechanisms to register keystrokes. Over time or due to manufacturing tolerances, these mechanisms can exhibit friction, scratchiness, or inconsistent actuation. Lubrication addresses these issues by applying a specialized lubricant to key moving parts within the switch, primarily the stem and its housing.

Why Lubricate Your Switches?

The primary reasons for lubricating mechanical keyboard switches are:

• Improved Smoothness: The most noticeable benefit is a smoother, more fluid keystroke. Lubricant fills microscopic imperfections in the plastic and metal components, reducing the 'scratchy' sensation often felt in unlubed switches.
• Enhanced Sound Profile: Lubrication can significantly alter the acoustics of a keyboard. It often dampens high-pitched pinging or rattling noises, resulting in a deeper, more 'thocky' or 'clacky' sound depending on the switch type.
• Reduced Wear and Tear: While not a primary focus for most users, a thin layer of lubricant can theoretically reduce friction-induced wear on switch components over extended periods.
• Customization: For many, it's a hobby and a way to personalize their keyboard beyond just aesthetics. The process allows for fine-tuning the feel and sound to individual preferences.

Types of Lubricants

The choice of lubricant is crucial and depends heavily on the type of switch being lubed:

• For Linear Switches: These switches have a consistent resistance throughout the keystroke. Common lubricants include Krytox 205g0 (a thicker, silicone-based grease) or Tribosys 3204 (a thinner, PTFE-based lubricant). Krytox 205g0 is popular for its ability to create a very smooth feel and deep sound, while Tribosys 3204 is often preferred for a lighter feel and less sound dampening.
• For Tactile and Clicky Switches: These switches have a bump or audible click. Lubing these requires more care to avoid dulling the tactile feedback or click mechanism. Thinner lubricants like Tribosys 3203 or 3204 are generally recommended. Applying lube too thickly can significantly reduce or eliminate the tactile bump.
• Dielectric Grease: While sometimes used, it's generally not recommended for keyboard switches as it can be too thick and attract dust.

How to Lubricate Your Switches: A Step-by-Step Guide

Lubricating switches is a time-consuming but rewarding process. It requires patience and attention to detail.

Step 1: Gather Your Supplies

You will need:

• Your mechanical keyboard or loose switches.
• A switch opener (specific to MX-style or Kailh-style switches).
• Fine-tipped brushes (e.g., makeup brushes, paintbrushes).
• Your chosen lubricant.
• A small container or palette for the lubricant.
• Tweezers (optional, for handling small parts).
• A switch lubricant station (optional, but helpful for organization).
• A clean, well-lit workspace.

Step 2: Disassemble the Switches

Using a switch opener, carefully pry open each switch. Most switches consist of four parts: the housing (top and bottom pieces), the stem, and the spring. Keep track of which part belongs to which switch, especially if you have different switch types.

Step 3: Lubricate the Components

This is the most critical step. Apply a thin, even layer of lubricant to the following areas:

• Stem: Apply lube to the sides of the stem sliders. Avoid lubing the legs of tactile switches if you want to preserve the tactility. Some enthusiasts also lube the top and bottom of the stem.
• Housing: Apply a thin layer to the inside walls of the bottom housing where the stem slides.
• Spring: You can either 'bag lube' the springs (put springs in a bag with a small amount of lube and shake) or apply a tiny amount of lube directly to the ends of the spring to prevent spring ping.

Important Considerations:

• Less is More: It's far easier to add more lube than to remove excess. Over-lubing can make switches feel mushy and unresponsive.
• Consistency: Aim for a consistent application across all switches for a uniform feel.
• Tactile/Clicky Switches: Be extremely conservative with lube on tactile and clicky switches. Focus on the stem sliders and avoid the tactile legs.

Step 4: Reassemble the Switches

Carefully place the lubed spring back into the bottom housing. Then, place the stem back into the housing, ensuring it slides smoothly. Finally, snap the top housing onto the bottom housing. You should hear a distinct click as it seals.

Step 5: Test the Switches

After reassembling, test each switch to ensure it actuates correctly and feels smooth. If a switch feels stiff or scratchy, it might need a bit more lube or better application. If it feels too mushy, you may have used too much lube and will need to disassemble and clean it.

Step 6: Reinstall and Enjoy

Once all switches are lubed and tested, reinstall them into your keyboard PCB and reassemble your keyboard. Enjoy the significantly improved typing experience!

Common Mistakes to Avoid

• Over-lubing: This is the most common mistake, leading to a mushy feel and reduced tactility.
• Lubing the Wrong Parts: For tactile switches, avoid lubing the tactile legs.
• Using the Wrong Lubricant: Using a lubricant that is too thick or too thin for the switch type can ruin the feel.
• Inconsistent Application: Uneven lubing results in a non-uniform typing experience.
• Forgetting to Test: Always test switches after lubing before fully assembling your keyboard.

Lubricating mechanical keyboard switches is a detailed process that requires patience and the right materials. However, the resulting improvement in smoothness, sound, and overall typing satisfaction makes it a worthwhile endeavor for many keyboard enthusiasts.