Making ceramics involves shaping clay into a form, letting it dry, firing it in a kiln to harden it permanently, then glazing and firing it again for a finished surface. The full process from raw clay to finished piece takes anywhere from a few days to several weeks, depending on the size of your work and how long each stage needs. Here’s what each step looks like in practice.
Choosing Your Clay
Clay comes in three main types, and the one you pick determines how you’ll fire it, what it looks like, and how durable the finished piece will be.
Earthenware is the most forgiving clay for beginners. It fires at relatively low temperatures and produces the warm, reddish-brown terra cotta you see in flower pots and traditional cookware. It stays somewhat porous after firing, which means it usually needs a glaze if you want it to hold liquids.
Stoneware fires at mid-range to high temperatures and produces dense, durable pieces. It’s the standard choice for functional pottery like mugs, bowls, and plates. Most studio potters work primarily with stoneware because it balances workability with strength.
Porcelain also fires at mid-range to high temperatures but produces a finer, more translucent result. It’s beautiful and strong once fired, but it’s less forgiving to work with. Porcelain is slippery on the wheel and cracks more easily during drying. It also shrinks more than earthenware. Across all clay types, expect your finished piece to be 8% to 20% smaller than the original wet form.
Essential Tools to Get Started
You don’t need much to begin. A basic toolkit includes a cut-off wire for slicing clay from a block or removing pieces from a wheel, a few ribs (flat tools made of wood, rubber, or metal) for smoothing and shaping surfaces, a scraper with teeth for scoring clay when you need to join two pieces together, a trimming tool for carving excess clay from the bottom of pots, a sponge for smoothing and controlling moisture, and a needle tool or sharp point for poking holes and cutting.
If you’re handbuilding, that’s genuinely all you need besides the clay itself. If you want to throw on a wheel, you’ll also need access to a pottery wheel, which most community studios and classes provide. A kiln is the biggest barrier to working at home, since even small ones cost several hundred dollars and need dedicated electrical circuits or ventilation. Most beginners start by using a shared studio kiln.
Three Ways to Shape Clay by Hand
Handbuilding is the most accessible entry point, requiring no wheel and no electricity. There are three core techniques, and you can combine all of them in a single piece.
Pinch pots start with a ball of clay. You push your thumb into the center and then pinch the walls between your thumb and fingers while slowly rotating, gradually thinning and raising the sides. This method can produce anything from rough, organic bowls to refined, elegant forms depending on how much you refine the surface.
Coil building uses rope-like rolls of clay stacked in courses, one on top of another, to build up the walls of a vessel or sculpture. You score and slip (scratch and wet) each coil before adding the next, then smooth the joints together for structural strength. Coiling lets you build much larger pieces than pinching allows and gives you control over the shape at every level.
Slab building starts with flat, even sheets of clay rolled out to a uniform thickness. You cut these slabs to shape and assemble them, sometimes draping them over or pressing them into molds. Slab construction is particularly good for angular, geometric forms that would be difficult or impossible to create on a wheel.
Throwing on the Wheel
Wheel throwing is what most people picture when they think of making pottery. You center a lump of clay on a spinning wheel head, then use your hands and fingers to open, lift, and shape the walls while the wheel rotates. The key challenge is centering: if the clay isn’t perfectly centered before you start pulling up walls, the piece will wobble and collapse. This takes practice. Most beginners spend their first several sessions just learning to center consistently.
Once centered, you press a thumb or fingers into the middle to create an opening, then gently pull the walls upward and outward. The clay needs to stay wet enough to move smoothly under your hands, which is where your sponge comes in. After shaping, you cut the piece off the wheel with a wire and set it aside to dry to a firmness where you can flip it over and trim the bottom with a trimming tool.
Drying: From Wet Clay to Bone Dry
Drying is one of the most important stages, and rushing it is the fastest way to crack or destroy a piece. Clay passes through several distinct states between wet and dry.
First it reaches “leather hard,” which is actually a range of stages from soft to stiff. At the softer end, the clay holds its shape but is still flexible enough to join pieces together, attach handles, or alter the form. You can test this by scoring the surface: if the clay rises in clean ridges along the score marks, it’s still workable. If the surface feels scratchy and clay falls away as fine grit, it’s too stiff for joining.
Eventually the clay begins to lighten or bleach in color. This signals it has passed through leather hard and is approaching “bone dry.” At this point you can no longer join, alter, or rehydrate the piece reliably, but you can still carve, scrape, or sand the surface for decorative detail. Bone dry clay is fragile and must be handled carefully. It contains no free water, but chemically bound water still remains inside, which is why firing is necessary.
Drying times vary widely based on the thickness of the piece, humidity, and air circulation. Thin pieces might dry in a few days; thick sculptural work can take a week or more. Covering work loosely with plastic slows drying and helps prevent uneven shrinkage, which causes cracking.
Bisque Firing
The first kiln firing, called bisque firing, transforms fragile dry clay into a hard, permanent material. For stoneware and porcelain, bisque firing typically happens at cone 08 to cone 04 (roughly 1,700°F to 1,950°F). Earthenware bisque fires slightly higher, around cone 02 to cone 1.
During bisque firing, the kiln drives out all remaining water, burns away organic material in the clay, and begins a process called vitrification. As the clay heats up, crystalline minerals in the clay start melting into glass. This glassy phase flows between the solid particles, fills pores, and creates bonds that hold everything together. The result is a piece that’s hard enough to handle but still porous enough to absorb glaze.
Kiln firing follows a carefully controlled schedule of temperature ramps. Each ramp has a rate of change (how many degrees per hour the kiln climbs or drops), a target temperature, and sometimes a hold time at that target. The initial ramp is typically slow, giving remaining moisture time to escape as steam without cracking the piece. The kiln then ramps faster through the middle range and slows again as it approaches the target. Some schedules include a “soak,” holding the kiln at peak temperature for 15 minutes or more to let the heat distribute evenly. Controlled cooling afterward prevents thermal shock.
Glazing Your Work
After bisque firing, your piece is ready for glaze. Glaze is a blend of minerals that melts during the second firing to form a glassy, often colorful surface. Beyond appearance, glaze seals the clay and makes it waterproof.
There are three common ways to apply glaze:
- Dipping: You submerge the bisque-fired piece directly into a bucket of liquid glaze, then pull it out. This gives the most even coat and works quickly, but you need enough mixed glaze to submerge the piece.
- Brushing: You paint the glaze on with a brush, usually in two or three coats. This is the most popular method for beginners and for using small quantities of commercial glaze. It requires more care to avoid streaks and uneven thickness.
- Spraying: You use a spray gun or airbrush to mist glaze onto the surface. This produces very thin, even layers and is common in professional studios, though it requires ventilation and spray equipment.
You can combine techniques on a single piece, and you can layer different glazes to create complex color effects. The bottom of the piece where it sits on the kiln shelf must stay unglazed, because melted glaze will fuse permanently to the shelf.
Glaze Firing
The second firing, called glaze firing, reaches a higher temperature than bisque for mid-range and high-fire clays. Stoneware and porcelain glazes typically mature around cone 4 to cone 6 (roughly 2,160°F to 2,230°F), though some high-fire work goes even higher. Earthenware glaze fires lower, matching its clay body’s tolerance.
During this firing, the glaze minerals melt and fuse to the clay surface. The clay body itself continues to vitrify, becoming denser and stronger. The glassy phase that forms between clay particles grows, filling more pores and bonding particles more tightly. This is why a finished stoneware mug is so much harder and less porous than the bisque-fired version. After the kiln cools (which can take a full day or longer), you open it to find your finished piece.
Making Food-Safe Ceramics
If you plan to eat or drink from your ceramics, glaze safety matters. The FDA considers any ceramic piece that looks like it could be used with food to be a food-use item unless it carries a specific permanent label stating it’s for decorative use only. That label must appear both as a stick-on notice visible to consumers and as a permanent marking on the base.
The primary concern is lead and other heavy metals leaching from glazes into food and drink. Glazes labeled “lead free” cannot contain extractable lead when tested; if they do, the FDA considers that labeling false and misleading. For your own functional pottery, stick with commercially formulated glazes specifically rated as food safe, fire them to the full temperature the manufacturer recommends, and avoid using raw materials containing lead or cadmium in any glaze that will touch food. Underfiring a glaze, even a safe one, can leave it incompletely melted and more likely to leach.