How to Clean and Maintain an Automatic OTF Knife

Yes. OTF knives aren't designed to be disassembled at home, and attempting to do so risks injury from the internal spring tension. The external cleaning method using oil, compressed air, and cotton swabs reaches the internal components through the blade channel without ever opening the knife.

Gun oil or knife oil both work well. REM Oil is a popular choice because it cleans and lubricates in one step. Avoid over-applying too much oil, which attracts debris and can create gummy buildup inside the handle over time.

Watch for slower deployment, grinding or resistance when firing, a blade that feels loose after deployment, or a stiff, sticky firing button. Any of these are signs it's time for a clean.

Most TEKTO automatic knife blades are ground between 15 and 20 degrees. Staying within that range is the most important variable; if it's too steep, it rounds the edge; if it's too shallow, it won't hold.

It depends on use. A good baseline: monthly for light carry, every two weeks for daily EDC, and weekly for heavy or outdoor use. When in doubt, look down the blade channel. Visible debris or a dry blade surface means it's time.

Store it retracted, in a dry environment, away from humidity and temperature swings. Wipe the blade down before storing, and apply a light coat of oil if it'll sit unused for more than a few weeks.