We use these at work.
They do a really good job on a longer knife, not so much for pocket knives.
Cutting paper, coated fiberglass, cotton....I've found skipping the fine stone,
going to the polish/strop wheel to get rid of the burr, then one pass each
side on the coarse one to get more tooth works well. For our use.
Some fiberglass will eat a blade so bad that you have to resharpen
after every 2 cuts.


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Parents who say they have good kids..Usually don't!