T12 Ballpoint Pottery Trimming Tool - DiamondCore Tools
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T12 Ballpoint Pottery Trimming Tool w/ Ballpoint Shaped Handle


DiamondCore® Tools’ T12 Ballpoint Pottery Trimming Tool features a 10 mm-diameter, round blade shape. This tool has a familiar shape but comes with the spirited trimming feel you can only get with our revolutionary, never-needs-sharpening blade design.

This tool is also ideal for applications where you are carving, shaving, sculpting, and scraping clay.

The bonus handle tip is tapered to a 3 mm softly rounded feature that is great for blending seams on added handles, feet, and a whole lot more. 


  • 10 mm-diameter, round-tipped blade
  • The blade has a familiar round shape and an uncommon feel
  • The handle tip is ball-shaped for a bonus smoothing tool
  • 12 mm x 12 mm x 16 cm beautiful hardwood handle
  • Extremely sharp blade every time you use it
  • Each T12 tool comes with one free spare blade; additional spare blades available for purchase
  • Wood grain may vary


  • High-performance pottery wheel trimming
  • Shave off thin, rounded ribbons
  • Smooth transition from foot to pot
  • Also great for carving, shaving, sculpting, and scraping
  • Blades are stainless steel and never need sharpening
  • Blades are the same sharpness on both sides, right- or left-handed


  • Use all safety precautions
  • Keep out of the reach of children


  • T12-3: 3-pack of extra blades
  • T12-10: 10-pack of extra blades
  • S1: The Sticky Pad grips a piece and adds extra stability, making trimming easier
  • S4: This Trimming Spinner stabilizes your piece and helps you make division hash marks


  • DTT SET: A complete Diamond Set of every T series trimming tool
  • TTSET3: The 5-Piece Trimming Tools Set 3 includes the T9, T10, T11, and T12, one extra blade for each tool, and our XS trimming spinner

Customer Reviews

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Customer Reviews

Based on 1 review
Nice shape!

This shape trimming tool is multi purpose. I use it to trim pieces but have also used it to create interesting texture. It's a little wider than your average loop end tool so it's a great option. The tool came with a spare blade which is great, so you'll know they will last you a long long time.