A pottery sponge adds water to clay, takes it away and smooths the surface, and it is the tool you touch most during a throwing session. The best pottery sponge depends on the job: an absorbent synthetic sponge for lifting water out of a pot, a fine natural elephant ear sponge for rims and finishing, and a sponge on a stick for the bottom of tall forms. Below we compare six sponges using maker pages and US dealer listings. This is a research-based comparison; we did not throw with these sponges ourselves.
A sponge comes in almost every starter kit; our best pottery tools guide covers those kits. This page is about the upgrades.
Quick picks
- Best overall: Mudtools MudSponge 3-Pack (absorbent, workhorse and finishing sponges in one set)
- Best elephant ear sponge: Royal & Langnickel Elephant Ear Sponges (natural, fine texture, three sizes)
- Best for left or right hand: DiamondCore Pottery Sponge Set 1 (triangle sponges in tough, medium and fine)
- Best for rims and porcelain: Xiem Pro-Sponge (chamois-type sponge with tapered edges)
- Best for tall forms: Xiem X-Sponge 2 (telescoping rod with a replaceable sponge head)
- Best budget sponge on a stick: Kemper SPG Sponge Holder (14 in hardwood handle, cheap refills)
Pottery sponges compared
| Sponge | Material | Size | Best job | Typical price band | Buy |
|---|---|---|---|---|---|
| Mudtools MudSponge 3-Pack | Synthetic, 3 densities | 3-3/4 x 2-1/4 x 3/4 in (Blick) | Throwing, cleanup, finishing | $20 to $30 per set | Check price |
| Royal & Langnickel Elephant Ear | Natural | 2-1/2 to 4-1/2 in, 3 sizes | Rims, smoothing, glazing | $3 to $10 each | Check price |
| DiamondCore Sponge Set 1 | Synthetic, 3 densities | 3.9 x 3 in, 15 mm thick | Throwing to finishing | $18 to $25 per set | Check price |
| Xiem Pro-Sponge | Chamois-type | 3 in diameter (Blick) | Rims, porcelain, final passes | $5 to $8 each | Check price |
| Xiem X-Sponge 2 | Sponge on telescoping rod | 8.5 to 23 or 26 in reach | Water out of tall pots | $12 to $18 | Check price |
| Kemper SPG Sponge Holder | Sponge on hardwood stick | 14 in | Water out of vases and jars | $9 to $12 | Check price |
Price bands are what we saw at maker stores and US dealers in October 2026. Check the live price before you buy; sponges are cheap enough that shipping often costs more than the sponge, so add them to a larger tool or clay order.
1. Mudtools MudSponge 3-Pack: best overall pottery sponge
The MudSponge set covers the three jobs most throwers need a sponge for, and each sponge is shaped like a kidney rib so it sits in the palm. US dealer Krueger Pottery quotes Mudtools on each one. The Orange Absorbent is "the perfect throwing sponge" and the most absorbent of the three, for pulling water out of the bottom of a pot. The Blue Workhorse is an open-cell, very absorbent all-purpose sponge for general use. The White Finishing sponge uses a tight-cell material, is less absorbent, and is meant for final detail and surface cleanup; Krueger says it will not pull grog out of the clay and compares it to a chamois.
The sponges ship compressed and expand when wet, and Krueger describes the material as biodegradable. Mudtools does not print a size on the pages we checked; Blick lists 3-3/4 x 2-1/4 x 3/4 in. Mudtools sells each sponge singly too (the White Finishing sponge was $9 on its own site), so you can replace only the one that wears out. For the rest of the brand, see our Mudtools review.
- Contents: Orange Absorbent, Blue Workhorse, White Finishing
- Material: synthetic, biodegradable per dealer; ships compressed
- Size: 3-3/4 x 2-1/4 x 3/4 in (Blick); not published by the maker
- Singles: sold separately
- Typical price band: $20 to $30 for the set (October 2026)
Pros
- Three densities for three jobs
- Rib shape fits the hand
- Replace singly
Cons
- Costs more than generic sponges
- No maker size chart
- The blue color fades with use, per Krueger
Who should skip it: hand-builders who mainly wipe slab edges, where one cheap synthetic or elephant ear sponge does the job.
2. Royal & Langnickel Elephant Ear Sponges: best elephant ear sponge
An elephant ear sponge is a thin, flat natural sea sponge with a fine, smooth texture, named for its curved ear-like shape. Potters use it to smooth rims, soften edges, compress a surface lightly and wipe glaze. It holds less water than a big synthetic throwing sponge, which is what makes it good for the last passes on a pot: you can smooth without flooding the clay.
Royal & Langnickel sells elephant ear sponges through Blick and other art suppliers in three sizes: 2-1/2 to 3 in, 3 to 3-1/2 in and 4 to 4-1/2 in. Blick describes them as natural, flat, highly absorbent sponges with a fine texture, durable and easy to handle, and recommends them for moistening, smoothing and painting ceramics. Because they are natural, the size, shape and color vary from piece to piece. Small elephant ear sponges from US ceramic dealers ran about $3 to $10 each in October 2026, depending on size; Blick's page did not show a price when we checked.
Pick the middle size for rims and mugs and the largest if you also want to wipe glaze off a foot ring.
- Material: natural sponge, flat shape, fine texture
- Sizes: 2-1/2 to 3 in; 3 to 3-1/2 in; 4 to 4-1/2 in
- Uses (per dealer): moistening, smoothing, painting ceramics
- Note: size, shape and color vary because each is natural
- Typical price band: about $3 to $10 each, by size (October 2026)
Pros
- Very fine surface for rims and finishing
- Thin and easy to control
- Low cost
Cons
- Holds less water than a throwing sponge
- Natural variation from sponge to sponge
- Stiffer when dry
Who should skip it: beginners who want one sponge for everything on the wheel; start with an absorbent synthetic and add an elephant ear later.
3. DiamondCore Pottery Sponge Set 1: best for left or right hand
DiamondCore, best known for its diamond-coated trimming tools, makes a three-sponge set in a rounded triangle shape that it says suits both left- and right-handed potters. The sponges come in three firmness levels. The Tough sponge (SPG1, black) returns to shape after compression and is meant for shaping while throwing. The Medium (SPG2, purple) conforms a little and is a compromise for throwing and finishing. The Fine (SPG3, light blue) squishes the most and gives what DiamondCore calls an extremely smooth finish for final touch-ups.
DiamondCore publishes the size, which many sponge makers do not: about 3.9 x 3 in (10 x 7.5 cm) when expanded and 15 mm thick. The material is synthetic, stiff when dry and expands when wet, and the maker says it resists odors and staining and holds its shape after repeated wringing. Single sponges were $8 each on DiamondCore's site. See our DiamondCore pottery tools review for the rest of the line.
- Contents: Tough (SPG1), Medium (SPG2), Fine (SPG3)
- Size: 10 x 7.5 cm (about 3.9 x 3 in) expanded; 15 mm thick
- Shape: rounded equilateral triangle
- Material: synthetic; resists odors and staining (maker)
- Typical price band: $18 to $25 for the set (October 2026)
Pros
- Published size
- Firmness levels clearly described
- Triangle corner reaches into curves
- Either hand
Cons
- Thinner than the MudSponges, so it holds less water for throwing large pots
- Mainly sold direct and through art dealers
Who should skip it: potters who already own the MudSponge set; the two cover the same three jobs.
4. Xiem Pro-Sponge: best for rims and porcelain
The Xiem Pro-Sponge is a flat, round, chamois-type sponge with tapered edges. Clay-King describes it as extremely soft, super absorbent and long lasting, and says the tapered edges give fine control with porcelain or stoneware. Blick lists it at 3 in in diameter in fine, medium and smooth textures; dealers also sell versions labeled for porcelain, for stoneware and for finishing. Clay-King notes it expands to nearly twice its size when soaked, so wet it and wring it out before use.
The thin edge is the reason to buy one. You can drape it over a rim between two fingers to round and compress it, or run it along a foot without dragging the whole sponge across the pot. That control matters most with porcelain, which shows every mark; our porcelain throwing tips page covers that clay in more detail.
One small listing conflict: Clay-King tags the sponge type as synthetic while describing it as a chamois sponge. Either way, it behaves as a fine finishing sponge, not a water mover.
- Type: chamois-type finishing sponge with tapered edges
- Size: 3 in diameter (Blick); expands nearly 2x when soaked (Clay-King)
- Textures: fine, medium, smooth; porcelain, stoneware and finishing versions at dealers
- Typical price band: $5 to $8 each (October 2026)
Pros
- Tapered edge for rims and feet
- Very soft on porcelain
- Low cost
Cons
- Not for removing lots of water
- Dealers label the versions differently
- Material described inconsistently
Who should skip it: hand-builders working coarse, grogged clay, where a tougher sponge lasts longer and fine control matters less.
5. Xiem X-Sponge 2: best sponge on a stick for tall forms
Water that pools in the bottom of a tall vase or bottle softens the base and can crack it as it dries, but your hand will not reach. A sponge on a stick solves that. The Xiem X-Sponge 2 puts a 1.4 x 2.5 in sponge head on a telescoping steel rod with a soft rubber grip. The head threads on, so you can replace it when it wears out.
Dealers disagree on the reach. Clay-King lists 8.5 in extending to 23 in, while Blick lists 8.5 to 26 in. Either figure covers most home pots, and the short setting is handy for mugs. Clay-King's own text also describes the rod as chrome-plated in one place and stainless in another. The X-Sponge 2 comes in the Xiem Clay Essential Tool Kit; our Xiem review covers that kit.
- Reach: 8.5 to 23 in (Clay-King) or 8.5 to 26 in (Blick)
- Sponge head: 1.4 x 2.5 in, threaded, replaceable
- Rod and grip: telescoping steel rod; soft rubber handle
- Typical price band: $12 to $18 (October 2026)
Pros
- Adjusts from mugs to tall vases
- Packs short
- Replaceable head
Cons
- Reach differs between listings
- Refills cost extra
- Small head for wide bowls
Who should skip it: potters who mostly throw bowls, plates and short mugs, where a hand sponge reaches everything.
6. Kemper SPG Sponge Holder: best budget sponge on a stick
The Kemper SPG is the classic fixed sponge on a stick: a 14 in hardwood handle with a ceramic sponge held by hardware that Kemper says grips any sponge firmly and protects your piece. Kemper says it reaches down inside without gouging and will not bend or flex under stress. Replacement sponges (Kemper SPR) were under $2 on Kemper's site, and the holder itself sat around $10.
It does not telescope, so it is longer to store than the X-Sponge 2, but there is nothing to unscrew or collapse, and the wood handle is easy to grip with wet hands. You can also fit a cut-down piece of any sponge you like. Kemper also makes the PTK kit, so many potters already own its tools; our Kemper pottery tools review explains the codes.
- Length: 14 in
- Handle: hardwood
- Sponge: ceramic sponge included; SPR replacement sold separately
- Typical price band: $9 to $12 (October 2026)
Pros
- Low price
- Very cheap refills
- Rigid handle
- Accepts other sponges
Cons
- Fixed length
- Wood handle needs drying after use
- Sponge size not published
Who should skip it: potters who already own the Xiem Clay Essential kit, which includes the X-Sponge 2.
How to choose a pottery sponge
Most potters end up with three or four sponges, each for a different stage. Here is how to pick them.
Natural or synthetic
Natural sea sponges are soft and absorbent with an irregular surface, and they vary piece to piece. Synthetic sponges made for clay are consistent, hold up to gritty clay and can be bought again in exactly the same firmness. Most throwers use a synthetic sponge for moving water and a natural sponge for finishing. Clay suppliers such as Clay-King group sponges into synthetic, natural and chamois for that reason.
What is an elephant ear sponge?
An elephant ear sponge is a natural sea sponge that grows as a thin, curved, flat piece with a fine surface. In pottery it is a finishing sponge: it smooths rims and edges, removes throwing marks lightly and wipes glaze from areas such as a foot ring. Because it is thin, it gives better control than a thick block sponge but carries less water.
Cell size and density
Open, large cells hold and release a lot of water and suit the throwing stage. Tight, small cells leave a smoother surface and suit finishing; they also pull less grog out of a gritty clay body. If your sponge leaves pits or drags sand to the surface, switch to a finer one for the last pass.
Shape and size
Kidney and triangle shapes fit the palm and reach into the curve where a wall meets the floor of a pot. Round flat sponges with tapered edges are best for rims. A sponge on a stick handles tall or narrow forms. Larger, thicker sponges move more water for big bowls, while small ones give more control on mugs.
Sponges for hand-building
Hand-builders use a sponge to wipe slab and coil seams, round edges and keep joins damp. A medium or fine synthetic sponge and an elephant ear sponge cover most hand-building work. A sponge is not a substitute for slip and scoring at joins.
How many sponges you need
A practical set is one absorbent throwing sponge, one fine finishing sponge or elephant ear, one sponge on a stick if you throw tall forms, and a separate cheap sponge for glaze and cleanup so glaze never ends up on your throwing sponge.
Using a sponge without over-wetting the clay
Too much water weakens walls and makes pots slump; too little makes clay drag against your hands. Wring the throwing sponge out before you lift water from inside a pot, and pull standing water out of the bottom before it soaks into the base. Use the finishing sponge nearly dry on rims. Our wheel throwing for beginners guide shows where a sponge fits in each step.
Do not leave sponges sitting in your throwing water bucket between sessions. Rinse them in clean water, squeeze them out and let them air dry somewhere with airflow so they do not sour or grow mildew.
Cleaning, glaze sponges and when to replace them
Rinse sponges until the water runs clear after each session, then air dry. Keep a separate sponge for wiping glaze off feet and bases; glaze materials should not mix with your throwing sponge, and our how to glaze pottery guide shows where that wipe fits. Replace a sponge when it starts tearing, crumbling or leaving bits in the clay. A torn throwing sponge can leave pieces in a wall that show up after firing.
Use a damp sponge to clean tables, tools and wheel trays. Dry clay and glaze dust contains crystalline silica, so wet-clean instead of dry sweeping, and wear a NIOSH-approved respirator when you mix dry clay or glaze materials. Check the maker's SDS for any glaze you sponge off. Our clay dust safety guide has more.
Carrying sponges to class? A mesh pocket or open center in a tool bag lets them dry; see our pottery tool bag picks.
Sources: Mudtools online store (MudSponge singles); Krueger Pottery Supply MudSponge Collection listing; Blick listings for Mudtools MudSponge, Royal & Langnickel Elephant Ear Sponges, Xiem Studio Pro-Sponges, X-Sponge 2 and DiamondCore Pottery Sponges; DiamondCore Pottery Sponge (Tough, Medium, Fine) and Pottery Sponge Set 1 pages and sponge article; Clay-King Xiem Pro Sponge Finishing, X-Sponge II and sponge category pages; Kemper Tools SPG Sponge Holder and Throwing collection pages; Chesapeake Ceramics and Nasco elephant ear sponge listings; Pottery Supplies Online sponge article; ARTnews sponge roundup. Research-based comparison, no hands-on testing. Specs checked October 2026.