You can stand in front of a wall of pottery tools and not be able to tell what half of them are for. Most are sold with a name and a price and nothing else, and plenty of them look near enough identical to tools that do a completely different job.
So this is the conversation we have at the counter. What each family of tool is doing to the clay, which one to reach for when, and which ones only start to make sense once you have hit the problem they solve.
Most of it you will not need for a year, and some of it you will never need. There is a six item list at the bottom if you want the short answer.
What the tool is actually doing
Four things happen to clay, and almost every tool belongs to one of them.
You remove material: wires, knives, loop tools, ribbons. You move it without removing it: ribs, kidneys, paddles, rollers. You mark it: pins, scoring tools, stamps, carving blades. And you put colour on it: brushes, pens, pencils, trailers, resists.
A tool that does two of those badly is worse than two tools that each do one well.
Cutting and trimming
Wires cut through bulk. Off the wheel, off the block, through a slab. A knife will do it and will leave a dragged, uneven wall. A pottery wire is the first tool to own and the first to fray; most people keep using theirs long past the point of replacing it. A bow harp does the same job with the wire held under tension, which is what you want for levelling a rim or slicing an even slab.
Loop and ribbon tools take material off a leather-hard pot, usually the foot. The cheap metal loop tools are genuinely fine to learn on. What they do badly is hold an edge: the loop is mild steel, and clay is full of grog and quartz, so the edge is wearing away the whole time it works. You notice it as pushing rather than cutting about halfway through a session.
That is the problem every expensive trimming tool exists to solve, and there are two answers to it.
Tungsten carbide is harder than most of what is in your clay, so the edge stays where it is. It is also brittle, so it chips rather than dulling, and it wants light pressure and a soft landing. We stock it on turned rosewood handles, and as the Tortuga Tools range with tips that unscrew and get replaced rather than being glued in for life.
Tungsten steel is the other answer. It is a steel, so it is tougher and you can sharpen it yourself, and it will not hold an edge as long as carbide. Which you want depends on whether you would rather maintain a tool or replace a tip.
Knives cut rather than scrape: slabs, openwork, mould seams, a line that has to stay where you put it. The spec that decides how one behaves is blade thickness, and most are sold without it. Ours are sold by it, and we have written up what it does. Stiffness scales with the cube of thickness, so a 0.6mm blade is about twenty-seven times stiffer than a 0.2mm one, and they are not interchangeable.
Shaping on the wheel
Ribs and kidneys move clay without taking it away. The material decides the job.
Steel is stiff and thin, so it scrapes, compresses and leaves a flat surface. Rubber is soft and leaves a smooth, slightly polished one, and it will not score. Wood sits between the two and does not mark the clay the way metal can. Titanium and carbon fibre are the expensive end: thinner than steel for the same stiffness, and they do not corrode in a water bucket, which is what kills most studio tools.
Sponges. A sponge on a stick reaches the bottom of a tall form without you putting a hand in and pushing the wall out. Nothing else does that job.
A banding wheel is for decorating, not throwing, and it is the tool most people buy a year later than they should have.
Carving and texture
Most of the impulse buying in the shop happens here, so a warning first: a carving tool is only worth owning if you already know the mark you want. Buying a set and looking for a use is how studios end up with three drawers of unused steel.
Mini loop tools and ball tools do small removal and small pressure respectively. Bamboo tools do not mark the clay and do not corrode, which is why bamboo is still here. Textured rolling pins and paddles work on slabs and on the outside of a form.
For sgraffito and fine carving the question is the same as for knives: how stiff, how fine, and how well does it hold an edge. The BuschKraft Dragonfly system answers it with replaceable tungsten blades in one handle, which is the sensible way to own a lot of profiles without owning a lot of handles.
Putting colour on
Underglaze is colour that goes on before the glaze and does not melt and move. The choice here is about the medium rather than the colour, because the same pigment behaves completely differently depending on what is carrying it.
A pencil draws a dry line and you can sharpen it to a point. Best for sketching and writing, and it scores leather-hard clay if you press.
A marker pen puts down a wet, even line from a nib. It is the one for signatures, outlines and anything where a wobble would show, because a brush loaded with underglaze will not hold a line like that.
A brush pen is a nib with flex, so you get line weight back.
A watercolour pan set is the odd one and the most fun: twelve solid colours and a water brush, lifted and diluted and layered exactly as you would on paper.
Gosu is the traditional version of the same idea. A stiff cobalt paste you thin yourself, so one jar runs from a pale wash to a line that fires almost black. It is what Japanese blue and white porcelain has been painted with for four hundred years, and we have ten of them.
Also here: slip trailers for raised line, wax resist for keeping glaze off a foot, and dipping tools for getting a whole pot into a bucket without fingermarks.
Measuring, and the unglamorous end
Callipers for matching a lid to a gallery, which is the one measurement you cannot do by eye. A measuring compass for repeat work. Scoring tools for joins, where the real variable is how deep you score rather than what you score with. Whetstone sticks for taking the burr off a fired foot so it does not scratch a table.
What a beginner actually needs
Six things.
- A wire.
- A sponge, and a sponge on a stick if you are throwing tall.
- One steel kidney and one rubber one.
- One loop trimming tool.
- A pin tool.
- Callipers, once you start making lids.
That is it, and most of it is under ten pounds. Everything above that list is bought to solve a problem, and the right time to buy it is when you have the problem. We sell a beginner essentials set that covers most of it in one go, which is mostly a convenience.
When to spend more
Three honest triggers, and none of them is “being more serious”.
Your trimming tool stops cutting halfway through a session. Buy carbide or tungsten steel. This is the upgrade people feel most.
Your tools are rusting. Buy titanium, carbon fibre or wood for the things that live in water.
You can see the mark you want and cannot make it. Buy the specific tool. Not the set.
