Vince Pitelka
Appalachian Center for Craft
Tennessee Technological University

Up Scheduled Workshops General Information Ancient Clay Handbuilding Colored Clay Slab-Built Tableware

Outside the Wheel: Slab-Built Tableware 

Skill Level - Previous experience in handbuilding and/or throwing recommended

Background
Who said that plates have to be round?  In our industrialized society, people often assume that the potter's wheel is the logical choice for efficient production of handmade tableware.  The potter's wheel is one logical choice, but certainly not the only one.  The wheel inevitably defines ways of working that determine much of the design and aesthetic of wares produced.  That is not a bad thing, but no potter should be restricted any more than necessary by the studio equipment used.   Today, many potters simply use the wheel as a device to make components that are extensively altered and assembled to produce the finished product.  Others have discovered a world of possibility through handbuilding tableware with slabs. 

Flat planes can be manipulated and formed in many ways, and clay slabs are especially resilient and flexible (literally and figuratively).  The early Industrial Revolution itinerant tinsmith, with rolls of sheet metal, simple shears and forming tools, and a soldering iron could form an infinite range of discs, cylinders, and cones, and from them fabricate any sort of utilitarian vessel for the kitchen, workshop, or barn.  The same can be done with clay slabs, with the added advantages of clay's natural plasticity, allowing slabs to be stretched and/or slumped to create dome or bowl shapes, or organic forms.  

Workshop Description
This workshop explores soft-slab forming and slumping methods suitable for dinnerware such as trays, plates, platters, and bowls, plus soft- and stiff-slab methods appropriate for volumetric drinking, pouring, serving, and storage vessels.  Slab construction offers diverse possibilities for a wide range of utilitarian tableware.  The results can be loosely gestural and anthropomorphic or tight and rigidly geometric.  Plate and bowl forms can be round, triangular, square, polygonal, or asymmetrical.  

Much of the potential of slab construction lies in the jigs, fixtures, and molds.  You will learn to work with rigid construction foam-board, PVC pipe, and various other materials that allow quick and easy construction of slump molds and forming fixtures.   

We will explore surface decoration options appropriate to soft- and stiff-slab construction, with special consideration of hygienic, low-maintenance utilitarian surfaces.  Although our primary concerns are design and construction, we will bisque-fire as much work as possible so that it can be transported safely.

This workshop will help develop a different mindset, enhancing your sense of "spatial thinking" as applied to tableware forms.  Western traditions of utilitarian tableware reveal a limited range of precedent, and the potter should never feel restricted to those forms.  We want you to visualize and realize new possibilities beyond the common or expected solutions.    

Please bring samples or images of your work to share with the group.  

Materials Provided On-Site by Host

bulletBuff or white stoneware clay containing fine sand or grog (80-mesh or finer), decorating slips (white, black, and a few colors)
bulletOne gallon vinegar, two gallons slurry made from the claybody
bulletApproximately three dozen large sheets of poster board (get the cheap packages at Wal-Mart, Office-Max, or Staples)
bulletTwo 4'x8'x1" (or four 2'x8'x1") and one 4'x8'x2" (or two 2'x8'x2") sheets of rigid construction foamboard to make slump molds.  Please make sure that it is the closed-cell pink or blue construction foamboard, not the crumbly white stuff.  Check into pricing on the foamboard at Lowe's, Home Depot, or a good professional builder's supply to find the best price, and be sure to include the cost into the workshop fee, because the participants will each make a selection of foam slump molds and keep them.  The foamboard is available from home-improvement centers.  Get the pink or blue foamboard - not the small sheets of white Styrofoam - it is unsuitable for this use.  
bulletSeveral sheets each of coarse and medium sandpaper for shaping the foamboard.  

Facilities and Equipment Provided by Host

bullet Digital projector with PC connector cable
bulletAppropriately dark room with large screen or a large white wall
bulletLarge work tables
bullet 24" stool
bulletSlab roller
bulletOne dozen 24" by 36" sheets of 10 oz. unprimed canvas duck
bulletHeavy-duty rolling pin with 15" by 3" body and bearing-mounted handles (Google "Vic Firth maple rolling pin" or "Thorpe maple rolling pin")
bulletSaber saw with an extra-long fine-tooth blade and an adjustable foot allowing 45-degree cuts
bulletTwo clear plastic lidded storage boxes (approx. 18"x24"x12" high, for me to use as damp boxes)
bulletOne plastic spray-bottle for vinegar water
bulletSeveral sturdy banding wheels
bulletOne standard propane canister for a hand-held propane torch (I'll bring the torch)
bulletAt least eight approximately 2' by 3' pieces of 1/2" plywood for handling and flipping textured slabs
bulletA good assortment of wareboards and bats for handling and flipping slab-built plates and bowls
bulletAn assortment of varying lengths (6" to 10") of carpet tubes or PVC pipe of various diameters from 2" to 6"
bulletWood dowels - one length (generally either 48" or 36") each of 1/4", 5/16", 3/8", 1/2", 5/8" and 3/4" - cut each one in half and bring both halves

Supplies for Participants to Bring
Clay is generally purchased on-site.  Colored slips, joining slurry, vinegar, and posterboard (for templates) will be provided. The following is a lengthy list of supplies for a workshop, but these are the things you will need in order to continue doing this work on your own, and we will be able to make better use of the time we have if you bring all of these supplies.  For those flying in to take this workshop, check with the workshop host to see if some of these supplies might be available onsite. 

Note: The Kemper tools are available from your local ceramic supplier or at www.bigceramicstore.com. The Stanley Surform tools are available at most local hardware stores or at www.amazon.com - enter "Stanley Surform" in the search box.

bulletFour square yards of unprimed 10 oz. canvas duck, cut into 24" by 36" pieces - "10-ounce" is a trade reference to the weight per yard, and that's how canvas is sold in art supply stores.  If you buy from an awning, sail, or house painting supply business they might not use the ounce per yard reference, in which case you just need to look for good heavy-duty canvas, but make sure it is not primed or sealed at all.  
bulletStandard clay tools (the packaged Kemper kit contains a wood rib, stainless-steel scraper-rib, wood knife, needle tool, cutoff wire, small sponge, and trimming tools)
bulletKemper S-10 flexible stainless steel serrated rib (no substitutes)
bulletMetal fork
bulletA few soft brushes at least 1/2" diameter or 1" wide suitable for applying slip
bulletX-acto knife (pencil-thin model with 1" tapered blade - no substitutions)
bulletScissors
bullet18" or 24" ruler
bulletPencil
bulletCompass (for drawing circles)
bulletWood rolling pin with bearing-mounted handles (no one-piece rolling pins) - for the best ones, Google "Vic Firth maple rolling pin" or "Thorpe maple rolling pin," and get the one with the 12" barrel - they are listed as either 2.75" diameter or 3" diameter, but either will work fine.
bulletWood dowels - one length each of 1/4", 5/16", 3/8", 1/2", 5/8" and 3/4" - available from any hardware store or home improvement center - cut them all in half and bring both halves.  If you have access to a bench grinder, grind the ends to a slight point.  .
bulletStanley Surform Shaver (short curved blade) and Stanley Surform Pocket Plane (5" flat blade). Get both types - these are made to be woodworking tools, but are excellent for shaving clay - they are available from any good hardware store or home improvement center or online.
bulletSmall, sturdy banding wheel. The 8" CSI turntable available from most ceramics suppliers for around $16 is fine for our needs, but any sort of good-quality banding wheel will work.
bulletSpray bottle for vinegar water
bulletSmall plastic bucket for water
bulletSmall snap-lid plastic container for slurry
bullet6 manila folders for small templates
bulletA selection of bisque stamps, assorted rope/cord, and/or other textured objects or materials to impress texture into clay slabs.
bullet12 dry-cleaner bags or large plastic garbage bags to cover your work
bulletSmall towel or other sturdy rag
bulletApron (optional)
bulletIf you are driving, bring a large clear plastic storage bin with lid, approximately 18" by 24" by 12" deep, to serve as a personal damp box.  Transport your supplies in a separate box so that the plastic bin will be available for the intended use. 

Schedule for a Five-Day Workshop
This schedule serves as a general guide, but must remain flexible. Every workshop group is different, and the schedule always evolves to suit the needs and productivity of the participants.

Monday Morning - Introduction to the workshop, general information about the studio and our work schedule. Discussion/demo of making templates, rolling slabs, using rolling pin to eliminate directional grain structure - discussion of problems with clay-memory in slabs.

Monday Afternoon - Discussion-demo of making and using rigid foam slump molds, adding foot ring.  Demo of slab-texturing and impressing techniques for soft-slab and stiff-slab methods.  Work on templates, slump molds, make slabs.

Tuesday Morning - Further discussion/demo of slumped trays, plates and platters.  Work on textured slabs, slump/hump molds, slumped trays, plates and platters

Wednesday Morning - Discussion/demo of foam bowl molds and slumped bowls, adding foot ring.  Work on projects. 

Wednesday Afternoon - Discussion/demo of tube components for handles and spouts, other ways of making handles and pour spouts.  Work on projects.  Load bisque-firing of all dry work.  

Wednesday Afternoon or Evening - Slide show about Vince’s work.

Thursday Morning - Discussion/demo of larger two-piece platters, adding handles to slumped trays, plates and bowls.  Work on projects.  

Thursday Afternoon - Discussion/demo of making parts for larger pitchers.  Continued work on assembled forms.  

Friday - Discussion/demo of pitcher assembly.  Unload bisque firings, clean up studio. Discuss work, outcomes, possibilities, look at images and/or samples of work brought by participants, have lunch.

If you are interested in hosting one of my workshops, please contact me for terms, pricing, and scheduling.

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Site maintained by: Vince Pitelka -  Last Updated: November 15, 2009