Seattle Pottery Supply Header Home Kiln Repair Raku Events Firing Services Contact Us Our History Store Hours Map/Directions Order Info MSDS
Sign In

Shopping Cart


Clay

Seattle Pottery Supply manufactures the world's best clay, right here in Seattle, WA. Sourced from high quality materials, we mix and pug moist clay into 25 pound bags at our factory in Seattle. If you havent tried our clay, you should.

In addition to crafting our own signature clay bodies, we also carry a variety of popular clays from other brands.

SPS Clay Descriptions SPS Cone 8-10 Moist Clays Clay Shrinkage Charts SPS Cone 04-6 Moist Clays SPS Cone 06-1 Moist Clays SPS Casting Slip Prices SPS Paper Clays Laguna - Westwood Clays Southern Ice & Cool Ice Porcelain Specialty Clays Non-hardening Modeling Clay
CONE 8-10* MOIST CLAYS
AJ White Stoneware (SP785)
Color:
White/Off White
Great handling stoneware clay with fine grog to give extra stability.
Columbia Red 412 (SP721)
Color:
Red/Brown
Good plasticity but not sticky. Throws quite well. For small to large pieces.
Bob's Blend (SP742)
Color:
White/Off White
Smooth creamy white with a porcelain-like texture; easy to throw and very workable!
Columbia Red w/Grog (SP720)
Color:
Red/Brown
Beautiful deep red for those larger pieces. An SPS favorite with extremely good handbuilding characteristics.
Bob's Blend w/Grog (SP744)
Color:
White/Off White
An easy to work lightly sanded clay - very nice handling!
Columbia White (SP750)
Color:
Cream/Toast
Plastic and firm. Great for medium to small pieces, whether handbuilt or thrown. If you have used Rod's Bod you will love Columbia White.
Bruning (SP745)
Color:
Buff/Toast
A heavy grogged production stoneware. For large one-fire pieces, this is the clay! One of our best sellers for scuplture too!
Columbia Yellow (SP790)
Color:
Buff/Tan
Similar to Columbia White in handling characteristics but what a color change.
Cascade White (SP875)
Color:
White/Gray
A heavy grogged stoneware for medium to large pieces. Brightens some of those muddy glazes.
Crystal Creek (SP725)
Color:
Ivory/Toast
Good for both throwing and sculturing. Used for production and general work.
Columbia Buff 412 (SP723)
Color:
Buff/Brown
Feels at home on the wheel and on the slabroller. Works to a nice smooth finish.
Delta White (SP787)
Color:
White/White Speck
Pliable stoneware body excellent for throwing and equally at home on the slabroller. True stoneware.
Columbia Buff 412 w/Grog (SP722)
Color:
Buff/Brown
Fantastic for building really large pieces. Nice handling and even drying.
AP: "Products bearing the AP Approved Product Seal of The Art and Craft Materials Institute, Inc. are certified in a program of toxicological evaluation by a medical expert to contain no materials in sufficient quantities to be toxic or injurious to humans. This program is reviewed by the Institute's Toxicological Advisory Board. These products are certified by the Institute to be labeld in accordance with voluntary chronic hazard labeling standard ASTM D-4236. In addition, there is not physical hazard as defined with 29 CFR Part 1910.1200 (c)."
Flameware (SP825)
Color:
Buff/Toast
A spodumene body designed for ovenware and stove top pieces.
Sculpture Buff (SP770)
Color:
Buff/Toast
Heavily grogged clay with great handling and feel designed for sculpture.
Grolleg Porcelain (SP840)
Color:
White/Cream
Beautiful class English china clay body. Very translucent when thin. Excellent plasticity for making small to medium pieces.
Sea Mix 10 (SP844)
Color: White/Off White
A new throwing clay that is exceptional for throwing as well as sculpting.
Kenzan Porcelain (SP850)
Color:
White/Gray
Extremely plastic porcelain body. Excellent for throwing and handbuilding!
Sea Mix 10 412 (SP846)
Color: White/Off White
This clays fires the same as Sea Mix 10 but consistency of the clay is slightly coarse in comparison.
Kodiak (SP855)
Color:
Cream/Gray-toast
New! Wonderful throwing and handbuilding clay for extra strong and tight functional pieces. Lightly grogged.
Suzuki EPK (SP805)
Color:
White/Cream
This beautiful porcelain throws extremely well and is well suited for your functional sets. Quite often fired to Cone 11 with striking results!
Kutani Porcelain (SP815)
Color:
White/Cream
Excellent throwing porcelain clay. Similar to Grolleg but made with domestic clays.
Tosch Porcelain (SP810)
Color:
White/Gray
Plasticity without that fatty feeling. Throws real well and is fantastic for handbuilding.
Montana Oak (SP757)
Color:
Buff/Brown
Handles well for all methods of forming. An "Eastern" Northwest tradition.
MT. Baker White (SP775)
Color:
White/Off White
White stoneware with grog. Good all around clay for throwing and handbuilding.
UWL 412 White (SP712)
Color:
White/Gray
Lightly grogged body suitable for most production throwing. A University of Washington classic!
North Bend White (NB) (SP780)
Color:
White/Ivory
They said "give us the structural integrity of Mt. Baker with AJ's feel for throwing." This one's for you!
Welch Ovenware (SP830)
Color:
White/Gray
A spudomene white ovenware. Great feel with good plasticity. Good for stove-top ware.
PLR (Pine Lake Red) (SP765)
Color: Tan/Brown
Throws great! Very strong and plastic. Has an extremely smooth finish.
Willamette Red (SP735)
Color:
Tan/Warm Brown
Very plastic, lightly grogged body this kind to the hands. A great clay whether throwing pots or making ornaments.
PLW (Pine Lake White) (SP760)
Color: Tan/Brown
Strong and plastic like PLR. A really good all purpose clay.
Willamette White (SP732)
Color:
Buff/Gray
Excellent tableware body that does not muddy up your glazes. Lightly grogged.
Rod's Bod (SP870)
Color: Brown/Gray
Tiny iron specks add a nice touch to this great handling clay. Medium grog.
Willamette Yellow (SP736)
Color: Tan/Brown
Yellow iron oxide is added to Willamette White to obtain this unique color.
Scott (SP747)
Color: Off White/Gray
Traditional Univerity of Washington body used for tableware, etc.
AP: "Products bearing the AP Approved Product Seal of The Art and Craft Materials Institute, Inc. are certified in a program of toxicological evaluation by a medical expert to contain no materials in sufficient quantities to be toxic or injurious to humans. This program is reviewed by the Institute's Toxicological Advisory Board. These products are certified by the Institute to be labeld in accordance with voluntary chronic hazard labeling standard ASTM D-4236. In addition, there is not physical hazard as defined with 29 CFR Part 1910.1200 (c)."

CONE 04-6* MOIST CLAYS
Alpine White (SP655)
Color:
White
Handles like a stoneware (which it is) but fires with the smooth look of porcelain.
Awaji Porcelain (SP690)
Color: White
Fires and feels like a natural high fire porcelain. Great feel and plasticity.
Autio (SP624)
Color:
Tan/Warm Brown
Rich body with grog excellent for handbuilding and large thrown pieces.
Crystal Stone (SP652)
Color: Lt./Deep Ivory
Good medium fire white grogged stoneware with excellent handling characteristics.
Crystal White Porcelain (SP650)
Color:
Ivory
Superb handling medium fire porcelain. Highly plastic for a porcelain in this firing range.
Sea Mix 5 (SP640)
Color: White
New clay that has a smooth, porcelain texture that is easy to throw and sculpt.
CKK6 (SP651)
Color:
Bright White
Smooth, plastic bright-white porcelain. Hands and holds-up very well.
Sea Mix 5 w/Sand (SP641)
Color: White
Another new clay that is easy to hand build and great for those larger projects.
CKK6 w/Grog (SP653)
Color:
Bright White
A porcelain with fine grog added for your larger projects. Great for handbuilding.
Vashon Brown (SP611)
Color:
Brown/Chocolate
Extremely plastic and strong. Undoubtedly one of the best "everything" clays available.
Dove Porcelain (SP660)
Color:
White
Translucent. Looks and feels like a high fire body. One of the best porcelains available.
Vashon Brown w/Grog (SP612)
Color:
Brown/Chocolate
For those larger projects. Great for textured work.
Goldbar Brown (SP620)
Color:
Golden Brown
Excellent for handbuilding and throwing. Good strength and plasticity. Fantastic color!
Vashon Buff (SP609)
Color:
Tan/Warm Brown
The unique surface coloration invites using wax resist. Matures to tan/warm brown at Cone 4 - 6.
Goldstone (SP621)
Color:
Gold Brown w/Black Specks
Our Goldbar Brown with lovely speckling - nice bleed through under semi-opaque glazes.
Vashon Buff w/Grog (SP616)
Color:
Tan/Warm Brown
Added grog for added strength. Comfortable surface without that "dried leather" look.
Klamath Brown "LLB" (SP634)
Color: Rich Brown
An all purpose smooth textured clay. The handling properties rival the rich color.
Vashon Gray (SP613)
Color: Gray
Take the Vashon reputatin for great handling and make it a true gray.
Klamath Buff "LLM" (SP633)
Color: Buff/Tan
Good plasticity makes this clay useful for almost any project. Rich color.
Vashon Orange (SP615)
Color: Orange-red/Brown
Excellent for dinnerware to pots. Good plastic body with excellent credentials.
Klamath Red "LLR" (SP631)
Color: Earthen Red
Use it for tableware, bells or any other project. The color reminds one of pueblo stonewares.
Vashon Orange w/Grog (SP617)
Color: Orange-red/Brown
Excellent for dinnerware to pots. Good plastic body with excellent credentials.
Klamath White "LLW" (SP632)
Color: Cream
Like all Klamath clays, this fits almost every project you have in mind.
Vashon Red (SP610)
Color: Deep Red
Exclusive Washington state clays (used in all Vashon bodies) makes for superior handling.
Klamath Yellow (SP635)
Color: Earthen Red
Fires to the color of Klamath Red. Nice throwing!
Vashon Red w/Grog (SP605)
Color: Deep Red
This clay makes good large slabs as well as being a great throwing clay.
Maple Valley Red (SP625)
Color: Red Brown
Looks like reduction in oxidation. Heavy grog.
Vashon White (SP608)
Color: Creamy/Off White
Designed for production work. Handles so well you won't realize you've been working.
Midnight Black (SP695) Cone 04-5
Color: Black
Fascinating Black! Great for handbuilding and throwing. The higher it's fired, the darker it gets.
Vashon White w/Grog (SP607)
Color: Creamy/Off White
For those big projects and it doesn't fight back while you are working with it. A real treat!
Morgan (SP614)
Color: Tan/Warm Brown
Excellent medium grogged handbuilding and throwing body. Good strength for functional ware.
AP: "Products bearing the AP Approved Product Seal of The Art and Craft Materials Institute, Inc. are certified in a program of toxicological evaluation by a medical expert to contain no materials in sufficient quantities to be toxic or injurious to humans. This program is reviewed by the Institute's Toxicological Advisory Board. These products are certified by the Institute to be labeld in accordance with voluntary chronic hazard labeling standard ASTM D-4236. In addition, there is not physical hazard as defined with 29 CFR Part 1910.1200 (c)."

SPS CASTING BODIES
CONE 8-10*

SUN YA Porcelain (SP950)
Color: Cream/Ivory
Kenzan Porcelain in a casting slip. Good trimability and excellent stability in firing.

CONE 04-6*

Dove Porcelain (SP645)
Color: White
Pours and trims like a low fire slip but has the true porcelain qualities that you love!

CONE 06-04*

XTRA White (SP375) or
BATCH MIX (SP350)
Color: White
Craze resistant, good release, trims extremely well. The slip version of LF-06 clay. Available in liquid form, pre-blended dry or a batch mix of separate ingredients.

Swan White (SP925)
Color: White
Whiteness and translucency you dream about are a reality in this great handling slip!

Cone 04-5!
Stoneware Black (SP960)
Stoneware Brown (SP930)
Stoneware Buff (SP940)
Stoneware Red (SP920)
Honest to goodness stoneware slips that cast and trim with ease. A truly remarkable series. Great for planters, dinnerware and slip decoration!

AP: "Products bearing the AP Approved Product Seal of The Art and Craft Materials Institute, Inc. are certified in a program of toxicological evaluation by a medical expert to contain no materials in sufficient quantities to be toxic or injurious to humans. This program is reviewed by the Institute's Toxicological Advisory Board. These products are certified by the Institute to be labeld in accordance with voluntary chronic hazard labeling standard ASTM D-4236. In addition, there is not physical hazard as defined with 29 CFR Part 1910.1200 (c)."


Clay
Code Name Image Price    

Prices are subject to change, and items may not be in stock.

WARNING: Some of our products can expose you to chemicals including Quartz, which are known to the State of California to cause cancer, and Lithium Carbonate, which is known to the State of California to cause birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.