Herb Knife Blade Protector

Herb Knife Blade Protector – With Adjustable TPU Strap

For fresh herbs while cooking or BBQing, I got myself a herb knife. I'm quite happy with the knife itself – good value for money – but the supplied blade protection could definitely have been better

It consisted of just four rounded plastic bumpers, protecting only the pointed corners of the blade. Not exactly ideal if you want to keep the blade sharp when storing

So I took matters into my own hands and designed a proper blade cover that fully encloses the blade, including a retaining strap and a standing surface

Features

The cover has two flat surfaces at its sides, allowing it and the knife to stand upright when not in use. It also features a circular arrangement of holes for strap adjustment

The tensioning strap is printed in TPU 95A and designed to be tightened further through the holes around the cover, allowing it to compensate for any stretching or wear over time

The strap has a toothed profile to prevent it from slipping off the blade cover. To remove it, simply twist it sideways until the teeth disengage. The double-groove design allows the strap to rotate easily while providing enough clamping force, even if you need to reposition it when tightening.

Material and Dimension note

Since this design is intended for use around food, make sure to choose a suitable filament. PETG or Nylon are possible options - a 3D-printed surface is not automatically food-safe

Includes a true-to-scale drawing of the blade

EDIT:

A friend recently told me that he had printed this model but didn't want to bother with multiple parts. Instead, he slightly scaled down the blade cover along one axis and printed the whole thing in TPU

Apparently, it works out fine - he always took "Function first" a little more literally than I did