The Work Sharp 3000 wood tool sharpener let's you monitor stock removal from above with the see-through wheel while a large port provides access
Worksharp 3000 Unboxing and Review
Work Sharp WS3000 Tool Sharpener Review
A homemade solution to a tool sharpener problem
Work Sharp 3000 Knife Sharpening Attachment
Tools Part II: Hand Tools For Cutting and Keeping Them Sharp – grouchyfarmer
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Work Sharp Benchtop Woodworking Tool Sharpener : Everything Else