When is a pot ready to trim?

At leather-hard: firm enough to turn upside down without bending, but soft enough that the tool shaves off clean ribbons of clay rather than powder.

What is the difference between loop and ribbon tools?

Both are shaped wire or metal strips on a handle. Loop tools are usually made from round wire; ribbon tools use a flat metal strip that holds a sharper edge. Both are used for trimming and carving.

Why does my trimming tool chatter?

Chatter marks usually mean the clay is too dry or the tool is dull. Slow the wheel, take lighter passes, lightly mist the surface or use a sharper loop.

Pottery tools

Trimming & Carving

Pottery trimming and carving tools for refining feet, rims and surfaces: loop and ribbon tools, detail and needle tools, fettling knives and foot ring templates.