Stop Ruining Your Multi-Tool: Clean It Like a Pro

If you carry your multi-tool at your side throughout the day, then it can get quite dirty. Grime from pocket lint, oil and other debris can build up in the hinges. Over time, the factory lubricating oils can also thicken,  creating a sticky residue that makes it harder to open the blades. If you want your multi-tool to serve you, then you need to serve it by giving it a deep clean every now and then. 

Related: Leatherman Just Unveiled Its Smallest Multitool Yet

How to Clean A Multi-Tool

Supplies:

• Warm soapy water
• A stiff bristled brush (an old toothbrush works nicely)
• Cotton swabs
• Microfiber cloth
• A light lubricant (Nano-Oil, mineral oil, or teflon based)
• White vinegar (for rust spots)
• WD-40 (as a cleaning solvent)

How to Clean A Multi-tool

Step 1: Clean the exterior.

Start by wiping down the exterior of the multi-tool. Spray the pivots points and any moving parts with a little bit of WD-40 to loosen up any grime.  

Note: WHile WD-40 is great for removing grime, it’s not an effective long-term lubricant. You’ll still need to apply oil later.

Step 2: Scrub away grime.

Scrub the stained surfaces of the multi-tool using a non-abrasive material. I like using a Scotch-Brite pad for this step. It’s rough enough to scrub off grime without scratching the stainless steel surface. Use a toothbrush or cotton swabs to get into the cracks and crevices of your multi-tool. Open all of the functions to get into all the nooks and crannies, taking care not to cut yourself as you work around the blades.

Step 4: Dry thoroughly.

Getting the multitool dry is the most important part of the cleaning process. Any moisture left inside the multitool can cause corrosion. You can allow it to air dry, but using a hairdryer set to low to dry it quickly is the best option.

Step 5: Apply lubricating oil.

I like to put a drop of lubricating oil on each of the tool’s pivot points. My favorite lubricant is Nano-Oil, which has a very fine applicator that makes it easy to apply that "just right" amount of oil.

Deep Cleaning Hacks

Sometimes a routine scrub isn’t enough; that’s when you need to pull out out the big guns: 

• Compressed Air: If pocket lint and dust are stuck deep inside the multitool, I’ve found that a can of compressed air, like the kind used for cleaning computer keyboards, is the best way to blow out debris.
• Rust Removal: Even though stainless steel is more resistant to rust, it’s not rust proof. Acids from tree sap, saltwater, and other corrosive materials can break through the protective seal on a multi-tool, causing it to rust.  Small rust spots can also form from moisture, salt and acids accumulating on its surface. For stubborn rust, use a rust eraser or a rust removing metal polisher, such as Flitz, to restore the finish.

Never Do This...

• The Dishwasher: Never put a multi-tool into a dishwasher. Dishwashing detergents can damage plastic parts and pit stainless steel, removing the protective coating that prevents rust.
• Harsh Chemicals: Avoid using bleach and other chlorine based cleaners. These harsh chemicals can remove stainless steel’s protective layer.
• Disassembling: Don’t take the tool apart. Most manufacturers use small springs, washers, and other components that are very difficult to reassemble correctly, which is why disassembling your multi-tool usually voids the warranty.
• Over-Oiling: A little oil goes a long way. Using too much makes your multitool a magnet for dirt and grime.