400 whetstones are needed for finishing cylinders and I was surprised I could only find them in the US (after many months of searching the UK). The price was about the same as the 280 grit stones I bought in the UK a year ago so I have no complaints as they have driven 3000 miles for next to nothing.
π Enhanced Superfine Assortment: Various Sizes, Multi-purpose, and Reusable
10 Review
USA Made Diamond Lapping Paste Polishing Compound 600 Grit Mesh 22-36 Microns For Rock Glass Metal Jewelry Resin Marble With High Concentration Of Diamond Powder By TechDiamondTools
30 Review
Sharpening stone Hatamoto HT0960, green
22 Review
Lansky 2D2C Diamond Ceramic Four: Ultimate Sharpening Solution for Precision
13 Review