Grindstones used to sharpen knives, scissors, scythes, etc. Grindstones for grain can be found in the links to windmills & watermills elsewhere on this website.

• Grindstone, Utrecht Psalter (Utrecht University Library MS 32, fol. 35v), c. 820-840
• A grindstone turned by two men while a third man sharpens a knife, the Luttrell Psalter (Brit. Lib. Add. 42130, fol. 78v), c. 1325-1340
• Grinding a sword-blade: “The swordsmith turns the winch or a large grindstone which stands in a raised wooden frame. The smith's assistant sits astride the frame and angles the steel against the stone.” Romance of Alexander (Bodl. 264, fol. 113v), c. 1338-1344
• Detail from July in the frescoes at Castello Buonconsiglio, c. 1405-1410
• A knife-sharpener, Les Cris de Paris, 1500
• Melencolia I by Albrecht Dürer, 1514
• Drawing of a man sharpening an axe on a grindstone turned by a boy by Biagio Pupini
• Portrait of Virgil Solis with printmaker's tools, including a whetstone; 1562
• A small whetstone in a box of drawing instruments made in London c. 1565-1575
• A drawing of a knife-sharpener by Adriaen van Ostade
• Fridrich Punkauer in the Landauer Haudbuch (Amb. 279.2, fol. 49r), 1571