Is your plastic saya a little too long for your favorite Japanese knife? Good news: you don't necessarily need to buy a new one to get a better fit.
Unlike wood and leather, our plastic sayas can be modified at home to give your blade a glove-like fit. Watch Ernest cut one down to size in under a minute!
Check compatibility first: This trick applies only to plastic sheaths designed to be shortened, not to wooden sayas or every blade cover on the market. Measure the knife and sheath carefully, and make sure the finished guard will still cover the entire cutting edge and tip.
After trimming, smooth any sharp plastic edges and remove loose debris. Test the fit slowly, without forcing the knife inside. A sheath that is too tight, too loose, or too short can damage the blade rather than protect it.