When do you use a steel and when a carbon hone? I have a couple Henckels and a couple carbon Wustoff's. Is it bad to use the steel on the Henckels. Should the steel be reserved for carbon knives only? According to this, if you need to use the steel the knife needs to be re-sharpened afterwards. When using the carbon knives I use the steel a lot, but not with the harder steel knives, didnt seem to help much. In the video above, he also said you should use the strop everyday.