Verdict: Kemper pottery tools are the safe, cheap default for a first kit and for filling gaps in a tool bag. The PTK kit covers every basic step of throwing and trimming for well under the price of a single premium trimming tool, and individual Kemper tools mostly cost a few dollars each. The trade-off is that the edges, ribs and handles are basic, so serious throwers tend to replace two or three pieces within a year. This review is research-based: we compared Kemper's own product pages, its About page and US dealer listings, and did not use the tools ourselves.
Kemper pottery tools at a glance
| Line | Example codes | Material (maker) | Main use | Typical price band |
|---|---|---|---|---|
| Pottery Tool Kit | PTK | Mixed: stainless, hardwood, steel wire, sponge | First kit for wheel classes | About $22 to $40 |
| Loop tools | LT1 to LT8 (LT5 1.75 in) | Heavy stainless ribbon, sharpened | Trimming and hollowing | Under $10 each |
| Ribbon tools | R series 6 in, 8R series 8 in, MR mini | Sharpened stainless on hardwood | Carving, hollowing, trimming | Under $10 each; sets about $30 to $40 |
| Double wire end tools | D series 6 in, 8A1 to 8H8 8 in | Wire loops on a handle | Fine carving and detail | About $6 to $12 each |
| Wood tools and ribs | WT, JA, 400 series; RB1 to RB7 | Hardwood | Shaping, smoothing, modeling | About $7 to $20 |
| Scrapers and finish rubbers | S1 to S12; FRSS, FRSO | Spring stainless steel; rubber | Smoothing and refining walls | About $4 to $9 |
| Pro 400 series | Pro 410 to Pro 470 | Hardened high carbon steel, hardwood handle | Heavier trimming and carving | About $29 each at Kemper |
Codes and materials come from Kemper's product and collection pages. Price bands are from Kemper's store and US dealers in October 2026; check the live price.
The Kemper PTK Pottery Tool Kit
The PTK is the kit most US pottery classes put on their supply lists. Kemper calls it a kit for the beginning potter, in or out of the classroom, and says schools and universities use it. It comes in a reusable clear vinyl bag with pockets, which keeps the tools together for travel to a studio.
| Tool | Code | What Kemper says it is | What you use it for |
|---|---|---|---|
| Loop tool | LT5 | Heavy stainless ribbon with sharpened edges, 1.75 in loop, about 5 in long | Trimming feet, hollowing |
| Ribbon tool | 8R2 | 8 in, sharpened high-strength stainless ends on a hardwood handle | Carving and trimming |
| Potter's rib | RB2 | Smooth hardwood, 4 1/4 in | Shaping and smoothing on the wheel |
| Needle tool | PRO | Steel needle in a textured handle, about 6 5/8 in | Cutting rims, piercing, scoring |
| Wood modeling tool | WT6 | 8 in hardwood | Shaping, cleaning the base, detail |
| Sponge | SPR | Ceramic sponge (the refill for Kemper's SPG sponge holder); size not published | Removing water and smoothing |
| Steel scraper | S4 | Thin, flexible spring stainless steel; size not published | Smoothing and refining walls |
| Wire clay cutter | K35 | About 18 in stainless wire with 3 in hardwood toggles | Cutting clay and pots off the wheel |
Kemper's own PTK page lists eight tools. Some dealers, such as JB Tools, still title the kit "Set of 7". Count the pieces on the listing you buy; the eight above are what Kemper names in October 2026.
- Pieces: 8 (per Kemper)
- Case: clear vinyl bag with pockets
- Maker SKU: KTPTK
- Price band: about $22 to $40 at Kemper and US dealers in October 2026
Pros
- Covers wedging to trimming in one low-cost bag
- Tools match most class supply lists
- Every piece can be replaced on its own for a few dollars
Cons
- Hardwood rib and plain scraper are basic
- LT5 dulls sooner than premium trimming tools
- No storage beyond a soft bag
Who should skip it: potters who already own a needle, wire and sponge and only need a better trimming tool or rib. Buy those one at a time instead.
If you are still deciding between kits from several brands, our best pottery tools guide compares the PTK with Mudtools and Xiem kits side by side.
Kemper's main tool lines
Kemper's store sorts its range into Pro Tools, Carving, Hand Building, Sculpting, Smoothing, Throwing, Trimming and Sets, with about 246 listings in total. Most potters only need a handful of these lines. For the names and jobs of every tool type, see our clay tools hub.
Loop and ribbon tools
This is the core of the brand. Loop tools (LT codes) use a heavy stainless ribbon bent into round, teardrop and other shapes; the LT5 in the PTK is a 1.75 in loop about 5 in long. Ribbon tools come in 6 in (R codes) and 8 in (8R codes) lengths with a shaped end at each side, plus a mini ribbon range (MR1 to MR6) and "special" ribbon shapes (KSP). Our pottery trimming tools guide ranks the LT5 against DiamondCore, Mudtools and Xiem trimmers.
The 8RSS set gathers Kemper's 8 in ribbon tools for carving and hollowing larger pieces. Kemper describes the ends as sharpened high-strength stainless steel on hardwood handles, rated medium duty. The set count is not stated on the product page.
Pros
- Many shapes at low cost
- Stainless does not rust
- Easy to replace one tool
Cons
- Thinner steel can flex or chatter on firm leather-hard clay
- Edges need touching up
Who should skip it: potters who trim a lot of stoneware and want a blade that stays sharp longer.
Double wire end tools
Double wire end tools carry a small wire loop at each end of a handle. Kemper sells 6 in D codes (the D9 uses .035 in wire) and 8 in tools coded 8A1 to 8H8, plus the DSS set. They remove small, controlled amounts of clay, which suits sculpture, carving and cleaning up handles. Thin wire bends if you force it through firm clay.
Wood modeling tools and ribs
Kemper's wood tools run from 6 in (JA codes) to 8 in (WT6) and 10 in (402, 404, 406). The RB ribs are smooth hardwood in sizes from 3 1/2 in to 5 3/4 in, plus a Double 0 rib (RB00). Wood ribs work, but many throwers move on to a polymer or silicone rib for smoother walls.
Scrapers, finish rubbers and smoothing tools
Steel scrapers come in several gauges: the S4 in the PTK is thin, flexible spring stainless, while the S12 is a heavier, stiffer blade about 6 in long. Finish rubbers (FRSS, FRSO, FRSM) and the K20 recess smoother handle final smoothing on greenware.
Sgraffito and detail tools
The WLS wire loop sgraffito tool and the 6 in WS wire stylus are the two Kemper tools most often named for carving through underglaze. The WLS varies line width within one stroke; the WS cuts very fine lines. Our sgraffito pottery guide explains when to use each.
The Pro 400 series
The Pro line (Pro 410, 410 s, 420, 430, 440, 445, 460 and 470) is Kemper's step up. Kemper describes hardened and tempered high carbon steel blades set in hardwood handles with industrial epoxy and a brass ferrule, and says the steel gives better edge retention. The shapes, sizes and intended jobs of each number are not published by the maker, and several were out of stock on Kemper's store when we checked. High carbon steel also rusts if you leave it wet.
Throwing aids, sets and cutters
The Throwing collection adds aluminum calipers (8 in, 10 in and 12 in), pot lifts, a 14 in hardwood sponge holder (SPG) and more ribs. Hand-building buyers get pattern cutter sets, leaf and rose cutters, hole cutters and eye sizer sets. Kemper also sells K36, a nylon cord version of the K35 wire cutter, and soft and hard fettling knives (F96 and F97); our fettling knife guide compares those with other makers.
Kemper tools pottery history and who owns the brand
Kemper's About page traces the company to 1947, when Jack Kemper made a single tool in his California garage as a favor to a friend. The page says the company is "rooted in the U.S.A." but does not name a current factory or make a plain Made in USA claim; one product page (WT6) reads "imported and made in the USA", which does not say which part is which.
The About page names Bryan Vansell as the person leading Kemper today. New Mexico Clay identifies Bryan Vansell as the owner of Laguna Clay, and one design blog reports that Kemper announced a closure in 2024 before being sold to Laguna. Kemper's own pages do not describe the sale, so treat that detail as reported rather than confirmed. What matters for buyers: Kemper is selling and shipping in October 2026, and the PTK was in stock on its store.
What Kemper does well
- Price: most single tools cost a few dollars, so losing a needle tool or wire cutter is no drama.
- Class standard: the PTK is so common on supply lists that teachers can say "LT5" or "8R2" and students know the tool.
- Stainless loops: loop and ribbon ends are stainless steel, so they survive a wet tool bucket better than plain carbon steel.
- Range: dozens of loop, ribbon and wire shapes, plus cutters, calipers and pot lifts, from one maker.
- Clear naming: every tool has a short code, which makes reordering the exact shape easy.
Weak points
- Basic edges: loop and ribbon tools are sharp enough for class but dull sooner and chatter more than premium trimmers.
- Basic ribs: the hardwood RB2 shapes clay but leaves more texture than a polymer or silicone rib.
- Thin data: sizes are missing for several tools (the S4 scraper, the SPR sponge, every Pro 400 shape).
- Stock gaps: on 9 October 2026 Kemper's store showed zero stock for the LT5, RB2, 8R2, K35, S4 and WT6, so you may need a dealer for single tools.
- Piece count confusion: some dealers still sell the PTK as a 7-piece set.
Who should buy Kemper tools
Buy Kemper if you are starting a wheel class and need the listed kit, if you teach and need many identical kits, or if you want cheap spares for a home studio. The PTK plus a better rib covers most first-year throwing, which our wheel throwing for beginners guide walks through step by step.
Who should skip Kemper: experienced throwers who trim daily and want long-lasting edges, and anyone who wants detailed specs before buying. Premium brands publish more and hold an edge longer.
Alternatives to Kemper
- Xiem: titanium-fused trimmers, silicone ribs and two kits at a higher price; read our Xiem pottery tools review.
- Mudtools: polymer ribs and sponges that many potters add to a Kemper kit; see our Mudtools review.
- Dirty Girls: small-maker wires, ribs and carbon steel trimmers; see our Dirty Girls pottery tools review.
- DiamondCore: replaceable-blade trimming tools for potters who never want to sharpen, covered in our trimming tools guide linked above.
Care and safety
Rinse tools in a bucket of water rather than under the tap, so clay does not go down the drain, and let wooden handles and ribs dry fully between sessions. Wipe Pro 400 high carbon blades dry and give them a light coat of oil to stop rust. Trimming and scraping make clay scraps and dust that contain silica: wet-wipe your work area instead of sweeping, and wear a NIOSH-approved respirator when you handle dry clay or glaze materials. Our clay dust safety guide covers studio cleanup in detail.
Sources: Kemper Tools PTK, LT5, 8R2, RB2, K35, WT6, S4, PRO needle tool, SPG sponge holder and Pro 420 product pages; Kemper Sets, Throwing, Trimming, Smoothing, Pro Tools and all-products collection pages; Kemper About Us page; JB Tools PTK listing; New Mexico Clay Kemper and Laguna pages; Made Good Designs Kemper brand article; Austin Gallery tool set roundup. Research-based review, no hands-on testing. Specs checked October 2026.