Sheath Upkeep: Proper Care and Maintenance for Your Sidekick’s Home
Akin to maintaining your knife by sharpening it, you can maintain your sheath with some basic preventative care.
Both leather and synthetic sheaths can show a worn-down look, which affects the overall beauty of the sheath; more importantly, it affects the sheath’s performance. Here are some basic tips to keep your sheath in top form:
Visual Inspection. Don’t assume your sheath is free of flaws. Always inspect your gear before and after use. Look for tears, cracks or foreign substances on your sheath, as well as pulls in threads or missing rivets. The first step in correcting your sheath’s problems is recognizing that there is one.
Cleaning. Both synthetic and leather sheaths should be kept free of dirt and debris. Dirt can work its way into fibers and slowly degrade the material. Worse yet, dirt can be highly abrasive to the knife inserted into a sheath. Kydex sheaths can be washed off with soapy water, and leather sheaths can be brushed off and saddle soap used for cleaning.
Thread Repair. Your knife sheath might be constructed with stitching, and this could lead to pulled threads. Nylon sheaths can fray, and the fray will continue to spread unless you do something. Using a lighter, you can melt the threading and “mushroom” it to prevent it from pulling through. Nylon sheaths can also be melted easily, so use caution when applying heat to melt the fraying material.
Water Resistance. If you have a leather sheath, you might find treating it with a water-resistant finish makes sense. These will either harden or soften your sheath, so testing the treatment on the back of the belt loop is a good practice.
If your sheath already has a water-resistant finish, it might not absorb an aftermarket treatment. Prior to treating, warm your knife sheath in the oven at the lowest setting until the sheath is warm to the touch and the leather pores are open. Apply the finish until no more will soak in.
Adjusting Kydex Tension. Kydex and other plastic sheaths are usually constructed by applying heat to a material and bending and forming it around the contours of a knife. From time to time, heat and continued use can cause the retention to loosen. If you want to adjust this retention, you can dunk your knife sheath in hot water from your sink to bring it up to temperature.
Then, try to press the sheath into place with your thumbs and forefingers. If the warm water doesn’t work, you can use a hair dryer. If that doesn’t work, use a heat gun. At all points in this process, be careful not to lose more retention or shape by overheating your sheath.
Additional Security. When in doubt, duct tape and super glue are proven, field-tested ways of repairing your knife sheath in the field. You could accidentally slice through the leather sheath body or break the attachment point of your Kydex sheath. Duct tape and super glue will keep it together.