Verdict: Xiem pottery tools are worth buying if you want better-than-classroom tools without paying premium-brand prices. The titanium-fused trimmers are the main reason to choose the brand, the silicone ribs are cheap and come in clear firmness grades, and either kit replaces a basic bag with tools you will not outgrow quickly. The weak spots are patchy published data (Xiem's own site gives few dimensions) and kit contents that differ between dealers. This review is research-based: we compared Xiem's maker pages and catalog, US dealer listings that use Xiem's item codes, and published interviews, and did not use the tools ourselves.
Xiem pottery tools at a glance
| Line | Example codes | Material (maker or dealer) | Main use | Typical price band |
|---|---|---|---|---|
| Pottery Starter Tool Kit | PSTK10 | Mixed, 10 pieces | First wheel kit | About $50 to $65 |
| Clay Essential Tool Kit | CETK14 | Mixed, 14 pieces | Fuller kit with three trimmers | About $80 to $100 |
| Titanium-fused trimming tools | TFT (S, M, L), TFM mini | High carbon tempered stainless, titanium nitride coating | Trimming and carving | About $13 to $18 each |
| Heat-treated trimming tools | LTT02 to LTT08 | Heat-treated steel, thin blade | Lower-cost trimming | About $10 each |
| Silicone ribs | SCR (soft orange, firm blue), SCRS/M/L ultra soft | Silicone | Shaping and smoothing | About $5 to $7 each |
| Sponges | PSFSC, PSFPC, X-Sponge 2 | Chamois-type and synthetic sponge | Water removal and finishing | About $5 each; X-Sponge under $20 |
| Carving sets and other tools | PSTS7CS, PSTS7SD, PSTS9MC, FTS, XST | Steel ends, wood or foam handles | Sculpting, sgraffito, scoring | About $10 to $37 |
Codes come from Xiem's catalog and dealer listings that use Xiem's item codes. Price bands are from US dealers (Chesapeake Ceramics, Sheffield Pottery, Seattle Pottery Supply, Clay-King) in October 2026; check the live price.
Who makes Xiem tools
Xiem Tools was started by Kevin Xiem Nguyen, an industrial designer trained at Art Center who worked at design consultancies before turning to clay. According to Mayco's Xiem Studio page, he opened the Xiem Clay Center and Gallery in Los Angeles in 2003 and began making tools when the ones his classes needed were not available; Core77 dates the founding of Xiem Tools USA to 2014. Seattle Pottery Supply describes the titanium-fused trimmers as handmade in Garden Grove, California, from domestic and international materials.
You will see two names on shelves: Xiem Tools and Xiem Studio Tools. Both are the same maker; dealers such as Blick and The Ceramic Shop use the Xiem Studio name for ribs, sponges and needle tools. The maker's US store is Xiem Tools USA.
Xiem tools pottery starter tool kit (PSTK10)
The Pottery Starter Tool Kit is Xiem's 10-piece entry kit. Dealer listings describe it as Xiem's most popular essential tools in one set, aimed at students but suited to beginner through advanced techniques. Chesapeake Ceramics, which sells it under Xiem's code PSTK10, lists these pieces:
- Art Tube (clear storage tube)
- Foot shaper (beechwood, angled point at one end, concave edge at the other)
- Needle tool
- Heavy-duty clay sponge
- 11 in Pro wire clay cutter
- Titanium-fused trimming tool for large surfaces
- Titanium-fused trimming tool for feet and detail
- Soft silicone rib
- Rigid plastic rib
- Flexible stainless steel rib
Listings disagree on the details. Blick's listing for the same 10-piece kit names a Pro-Sponge for stoneware, medium and small trimming tools, a stainless steel rib and two silicone ribs (soft and firm), lists only nine items and does not mention the Art Tube. Check the contents on the listing you buy.
- Pieces: 10
- Trimming tools: 2 titanium-fused (per Chesapeake)
- Ribs: 3 (silicone, plastic, stainless per Chesapeake)
- Wire: 11 in Pro cutting wire
- Price band: about $50 to $65 in October 2026
Pros
- Two coated trimmers at kit price
- Three rib types to learn on
- Storage tube on the Chesapeake listing
Cons
- Costs more than double a Kemper PTK
- Contents vary between listings
- No scraper or wood modeling tool
Who should skip it: class students whose teacher names the Kemper PTK, and anyone who already owns a needle, wire and sponge. Buy the trimmers alone instead.
Xiem Clay Essential Tool Kit (CETK14)
The Clay Essential Tool Kit is the 14-piece set. Chesapeake Ceramics lists an Art Tube, the X-Sponge 2, a Pro Sponge for stoneware, a foot shaper, three titanium-fused trimming tools, the 11 in Pro wire clay cutter, a needle tool, a knife and scoring tool, and four ribs in plastic, silicone and stainless steel. Sheffield Pottery's listing (item XT10411) names the same tool types.
- Pieces: 14
- Trimming tools: 3 titanium-fused
- Ribs: 4 (plastic, silicone, stainless steel)
- Extras over the Starter kit: X-Sponge 2, knife and scoring tool, third trimmer, fourth rib
- Price band: about $80 to $100 in October 2026
Pros
- Three coated trimmers
- X-Sponge 2 for tall forms
- Covers throwing, trimming and joining
Cons
- High price for a first kit
- Listings do not say which rib is which material
Who should skip it: casual or once-a-week potters who will not use three trimmers or a telescoping sponge.
Starter or Essential: which Xiem kit
| Feature | Pottery Starter Tool Kit | Clay Essential Tool Kit |
|---|---|---|
| Pieces | 10 | 14 |
| Titanium-fused trimmers | 2 | 3 |
| Ribs | 3 | 4 |
| X-Sponge 2 | No | Yes |
| Knife and scoring tool | No | Yes |
| Price band | About $50 to $65 | About $80 to $100 |
| Check price | Check price | Check price |
Pick the Starter kit if you throw mugs and bowls; pick the Essential kit if you throw tall forms or join handles often. To compare both with other brands' kits, see our best pottery tools guide.
Titanium-fused trimming tools
These are the tools Xiem is best known for. Dealer listings that carry Xiem's text describe a high carbon, tempered stainless steel blade with a thin layer of titanium nitride fused to the surface, which Xiem says adds hardness, reduces friction and resists rust. Xiem's claim is that the blades are three times harder than standard steel and hold an edge longer than plain carbon steel. The TFT series comes in small, medium and large in several shapes (teardrop, round, oval, triangle and multi-function) on a hand-sanded beech handle with a flat bottom that stops it rolling and keeps the blade off the table. The TFM minis are double-ended with a soft foam grip.
Xiem also sells LTT trimmers with heat-treated steel blades, a cheaper option without the coating, and a separate carbide trimming line on its own store. The hardness figure is Xiem's own; we found no independent test. For how these rank against DiamondCore and Dolan, see our pottery trimming tools guide.
Pros
- Coated edge aimed at longer life
- Many shapes and sizes
- Flat handle protects the blade
Cons
- Still needs sharpening eventually
- Shape dimensions not published
Silicone, plastic and steel ribs
Xiem's rib range is large and cheap. Silicone ribs come in numbered shapes in two grades: blue is firm and orange is soft, according to The Ceramic Shop; Xiem's ultra soft ribs are lime green. Rib 1, for example, is 3 in wide, 1.5 in tall and 1/4 in thick with a perforated grip, sized for mugs and small bowls. Alongside them sit rigid plastic ribs (PCR), stainless steel ribs (SSR), edger and rim ribs, and decorating ribs and texture combs. Our pottery ribs guide explains which shape does what, and our clay tools hub names every other tool type.
Sponges and the X-Sponge 2
The X-Sponge 2 is a sponge on a telescoping rod for removing water from the bottom of tall or narrow pots. Clay-King lists a chrome-plated stainless rod, a soft rubber handle and a synthetic sponge head of 1.4 x 2.5 in that threads onto the rod, with refills sold separately. The flat Pro-Sponges are chamois-type sponges with tapered edges, sold for stoneware, porcelain and finishing. For sponge types in general, see our pottery sponges guide.
Sources disagree on the X-Sponge 2's reach: Blick lists 8.5 in to 26 in, while Clay-King lists 8.5 in to 23 in. Check the listing if reach matters for your tallest forms.
Other Xiem lines
- Foot shapers: 8.5 in beechwood tools in small, medium and large for cutting and shaping foot rings.
- Needle and scoring tools: double-ended XST tools, a scratch pen with interchangeable tips and a retractable scoring tool whose tines pull back for safety.
- Carving and sgraffito sets: 7-piece carving and sculpting, 7-piece sgraffito and detailing, and 9-piece modeling and carving sets, plus mini ribbon tools and a fluting tool set with titanium-coated blades.
- Decorating: Art Rollers, precision applicators and attachable letter and number stamps.
- Studio extras: the X-Board portable wedging board, bat lifter, Potter's Wand for narrow necks, X-Bevel cutter and teapot spout makers.
What Xiem does well
- Trimming value: coated trimmers at a fraction of the price of replaceable-blade tools.
- Studio-born designs: tools like the X-Sponge 2 and retractable scoring tool solve real class problems.
- Clear rib grades: color tells you firmness at a glance.
- Two sensible kits: both include coated trimmers and three or four rib types.
Weak points
- Thin maker data: few dimensions are published, and Xiem's newer website blocks automated reading, so most specs come via dealers.
- Kit contents vary: dealers list different sponges, trimmers and extras for the Starter kit.
- Maker-only claims: the "three times harder" figure has no independent test behind it.
- Price over basics: the Starter kit costs about double a Kemper PTK.
Who should buy Xiem tools
Buy Xiem if you have finished a first class and want tools that trim cleaner, if you throw tall forms and need the X-Sponge 2, or if you want a buy-once kit and can spend a little more.
Who should skip Xiem: students who must buy the kit their class names, and potters who want blades they never sharpen (look at replaceable-blade trimmers instead).
Alternatives to Xiem
- Kemper: the low-cost classroom standard; see our Kemper pottery tools review.
- Mudtools: polymer ribs and sponges with a large following; read our Mudtools review.
- Relyef: carving and trimming tools from another specialist maker; see our Relyef pottery tools page.
- DiamondCore: replaceable-blade trimmers, compared in our trimming tools guide above.
Care and safety
Rinse tools in a water bucket, dry the beech handles and steel blades, and store trimmers so the edges do not knock together. Silicone ribs clean with water. Trimming scraps and dried slip contain silica, so wet-wipe surfaces instead of sweeping and wear a NIOSH-approved respirator when you handle dry clay or glaze materials; our clay dust safety guide has the details.
Sources: Xiem Tools USA homepage and product index; Xiem 2017 new products catalog; Mayco Xiem Studio Tools page; Core77 interview with Kevin Nguyen; Chesapeake Ceramics PSTK10, CETK14, LTT04, Pro-Sponge and Xiem brand listings; Sheffield Pottery Clay Essential Tool Kit listing; Blick Pottery Starter Tool Kit, X-Sponge 2 and Xiem brand pages; Seattle Pottery Supply titanium-fused trimming tool listing; Creative Crafts TFM02 listing; The Ceramic Shop silicone rib listing; Clay-King X-Sponge II and foot shaper listings; Austin Gallery tool set roundup. Research-based review, no hands-on testing. Specs checked October 2026.