So far I've made do with the fact that I cut out a piece of cardboard medium thick, had bent and stapled together. This is simple and cheap, but I did not like in the long run really. Since providers of cooking bags Blade Guard recommend such a case came without the question.
On an Housewares Show, I came across a Wüsthof dealers and could look at me the blade guard in all versions at rest. About the amount excluding shipping charges came a very acceptable price.
The case is made of plastic and lined with a red non-woven fabric that looks and feels so velvety. On one of the long sides of the case is open, so that fit in very wide blades; It is then only the knife back out slightly.
I have several of these cases each for several weeks now sit in all sizes in use and the knife still "tight" and it does not make it seem like it could wear out in the medium term. As some knives have different blades at the same handle that envelopes with stickers are fitted which diameter is inside.
