How to Clean and Care for an OTF Knife
To care for an OTF knife, keep the blade clean and dry before you retract it, blow loose dirt out of the handle with compressed air, and use a drop or two of thin lubricant rather than a lot of oil. Do not take the knife apart. If the blade still will not deploy fully after cleaning, stop and contact us. The steps below show how to do each part safely.
Why OTFs need different care
On an OTF (out-the-front) knife the blade runs on a track inside a closed handle, pushed by a spring. You cannot wipe the inside the way you can wipe the pivot of a folding knife. Gunk, lint and dust that get inside the handle are the usual reason an OTF blade comes off track or fails to fire properly. Too much oil, or oil that is too thick, causes the same problem. So OTF care is mostly about keeping dirt out, removing loose debris, and lubricating sparingly. If you are new to how the mechanism works, see What Is an OTF Knife?
Everyday cleaning with the blade retracted
Safety first: always point the front of the knife away from yourself and others, keep fingers clear of the opening, and never look into the front of the handle.
- Clean the blade before it goes back in. Never retract the blade while it has water, oil, food residue or tape residue on it. With the blade out and locked, wipe it with a soft cloth from the spine side, moving away from the edge. Remember that on a double-edge dagger both edges are sharp. Dry it completely.
- Retract the blade. Do all remaining cleaning with the blade inside the handle.
- Blow out loose debris. With the blade retracted, use a can of compressed air to blow into the knife, including the opening at the bottom of the handle if your model has one. This pushes out loose dirt and lint.
- Wipe the handle. Clean the outside of the handle and pocket clip with a cloth dampened with mild dish soap and cool water, then dry it thoroughly. Do not soak the knife or put it in a dishwasher, and avoid harsh solvents and abrasives.
Light lubrication
An OTF needs very little oil. Too much, or oil that is too thick, will clog the mechanism.
- Use a thin lubricant made for knives. Avoid thick blade oils and general-purpose sprays.
- Apply one or two drops only. One common method is a single drop into the opening at the bottom of the handle; another is a drop on the sides at the base of the blade while it is out.
- Cycle the blade several times, pointing it safely away from you, to spread the lubricant and move out any remaining lint.
- Wipe any excess off the blade and handle before you carry it.
Keep the knife away from dirt and sand in the first place: grit inside the handle wears the mechanism quickly.
Blade not fully deploying: safe checks
If the blade comes out only part of the way, or does not lock, work through these checks in order:
- Treat it as live. Keep the front of the knife pointed away from you and keep fingers clear. Do not try to pull or push the blade out by hand.
- Check how it was fired. Firing the blade into anything even slightly firm can stop it from deploying properly. Fire it into open air.
- Check the control. Make sure you are moving the slide or pressing the button through its full travel.
- Clean it. With the blade retracted, blow out the handle with compressed air as above. Most misfires are caused by debris.
- Check the oil. If you recently oiled it heavily or used a thick oil, that may be the cause. Too much lubricant is hard to remove without disassembly, which is a reason to stop and ask us.
Some knife makers publish reset procedures for their own models. Designs differ, so do not improvise one on your knife; contact us instead.
When to stop and contact us
Stop using the knife and contact us if:
- the blade still misfires or will not fully deploy after cleaning;
- the blade is stuck part way out, or is loose in the handle;
- the blade does not lock open, or does not retract;
- anything rattles, grinds or feels different from new.
Do not open the handle or take the knife apart. There is a loaded spring and small internal parts inside, and taking it apart risks injury, lost parts and a knife that no longer works. Tell us the product code from the listing (for example "LE-112SBKDP") and describe what is happening.
Storage and the sheath
- Store the knife clean, dry and with the blade retracted.
- Keep it somewhere dry, away from moisture, and out of reach of children.
- Many of our OTF listings include a nylon sheath or pouch, some MOLLE-compatible. If the sheath gets wet, let it dry fully before storing the knife in it.
- Keep lint in mind: pockets and fabric pouches collect it, so a quick blast of compressed air now and then helps.
Where to go next
Regular light care keeps an OTF working smoothly for longer. If you have a question about a specific model, get in touch with the product code. You can browse the full range, including sheath and pouch options listed on each product, in our OTF Knives collection.
