Not a wheel tool: throwing, ribbing, and smoothing belong to ribs; wiring off belongs to the cut-off wire; trimming foot rings on the spinning wheel belongs to turning tools — this knife's edge and point serve none of those and gouge all of them.
Not for fired ware: past bisque, ceramic is harder than the blade — cutting ends at greenware, permanently.
Not a putty knife: a flexible putty blade spreads and lifts with a square end; this knife cuts and pierces with an edge and point — the potter reaching for one to spread wax resist or the painter reaching for this to fill nail holes have traded tools to both trades' loss.
Not the deflashing loop (the 95460's world), not a carving knife for wood (the sloyds'), and not a struck tool — its hardwood handle and slender blade would not survive one session under the 40210's hammer.
Every cut above obeys the same underlying variable
water content. Soft clay moves under the blade — cuts drag, edges distort; it is the joining and bending stage, not the cutting stage. Leather-hard is the knife's home: firm enough to hold a cut face, soft enough to shave in curls. Bone-dry is the stage to leave the knife on the rack — cuts chip, the work is fragile, and the product is dust. Let the edge glide, never push: clay rewards a moving slice and punishes pressure with distortion. Wipe constantly. Support what you cut — a wall pierced without backing, a rim trimmed without a steadying hand, an unsupported slab lifted early: same mistake, three costumes.
Asked at the counter
BUYER QUESTIONS ANSWERED BEFORE THE CART, NOT AFTER THE RETURN
Is the blade stiff or flexible?
Hyde doesn't print it, so we don't either — the trade sells fettling knives both ways, and this page's techniques are written to hold on either temper. Ask us and "unstated" is the honest answer until Hyde confirms.
Is this the "loop tool" my class list mentions?
No — a pottery loop/ribbon tool is a wire-edged wheel-trimming tool, which this store does not sell. The 95460 "Loop Knife" on this store is an industrial deflashing knife; the shared word is the whole resemblance. This knife covers the cutting items on that class list.
Why did dark specks appear in my white glaze?
Check your blade. Rust carried into white slip or porcelain fires as iron speckle — the wipe-dry-every-session rule in 2d is written in exactly those spots.
Can I cut bone-dry greenware or bisque?
Bone-dry: don't — it chips, it breaks, and it makes silica dust. Bisque: can't — fired ceramic is harder than the steel. This knife's whole working life happens between rolled-out and bone-dry.
What's "fettling"?
Dressing the mold seams off cast ware — the production job in 2b, and the knife's proper trade name. A foundry word that clay work adopted and kept.
Will it work for wax resist or spreading slip?
Wrong tool — spreading wants a brush or a flexible spatula blade. This is the studio's cutting edge; asking it to spread is the same category mistake as filling nail holes with it.
