The first Peter Pugger was improvised from someone else’s scrap.

Every pottery studio has a problem the kiln does not solve: clay. Scraps, trimmings and failed pots pile up, and reclaiming them means mixing, de-airing and compacting the clay back into something throwable. That is what a pugmill does — an auger that kneads and extrudes clay, often under vacuum to pull the air out. Peter Pugger is one of the best-known American names for the machine, and its own history begins with an improvisation.

The vacuum matters more than it sounds. Air trapped in clay can expand in the kiln and crack or burst a pot; wedging by hand removes some of it, at the cost of time and wrists. A de-airing pugmill does the job mechanically and returns reclaimed clay in a consistent, compacted state — which is why the machine turns up in teaching studios and production potteries alike, wherever clay is recycled in bulk.

“The first Peter Pugger was born in 1973 in sunny San Luis Obispo, California,” the company says. It was built by an architect and potter, Gordon Motta, and an engineer, Randy Wood, mostly, it says, from “recycled parts from abandoned garlic factory processing equipment.” The machinery, by the company’s account, had been abandoned by a garlic processor; the potters gave it a second life. Motta later returned to Hawaii, and it is Wood whom the company’s history goes on to quote.

The name came early and stuck. Wood’s own verdict, as the company quotes him, is one of the most candid lines in any brand history we have read: “If I had it to do over, I’m not sure I’d call it Peter Pugger, but it sure is a name people don’t forget.” It is a fair summary of how naming works in a niche trade. A slightly silly, alliterative name that potters can say across a studio has lasted half a century.

The patents are real — and one number on its own patent page belongs to someone else.

Peter Pugger’s engineering is on the public record. The company says it had its “first patent” by 1980, and the US register bears that out: US 4,322,169, “Clay mixing apparatus,” filed by Randolph C. Wood on 12 June 1980 and granted on 30 March 1982. A second, US 5,716,130, for a vacuum pug mill, followed in Wood’s name in 1998 — the same inventor returning to the same machine eighteen years after his first grant was filed. Two more vacuum-pugmill patents, US 9,475,018 in 2016 and US 10,005,051 in 2018, name Jared Paz of Ukiah as inventor; trade listings describe Paz as the company’s president. Four patents across nearly forty years is a long record of engineering for a machine most potters never think about.

Its own patent page, though, contains a small surprise. Among the numbers it lists is US 9,817,541 — which, in the patent office’s records, belongs to an unrelated technology company and concerns “Managing Hierarchically Related Windows in a Single Display.” The same page lists 10,005,051 twice. These look like clerical slips rather than anything more, and we note them only because a patent list is a brand claim, and claims are worth checking. (The 2018 patent itself misprints its inventor’s town as “Uklah.”)

The line of succession from Wood to Paz is not dated in anything we could verify, so we do not date it. What the record shows is continuity of invention: the machine’s core idea patented by one of its founders in 1980, refined by him in 1998, and developed again by the next generation of management in Ukiah.

“MADE IN THE USA,” says the footer. The factory is in Ukiah.

Peter Pugger’s origin statement is brief and complete: its site footer reads “© Peter Pugger Mfg Inc • 2026 • MADE IN THE USA,” and gives an address on Christy Lane in Ukiah, in Mendocino County. (Some of its page titles say “Santa Clara,” which appears to be an artefact of search optimisation rather than a second site; we use the address.)

The range is named by size: the VPM-7, 9, 20, 30, 60 and 100, with stainless-steel, tile-extruder and high-compression variants. Its title tagline claims the category outright — “World Leader in Vacuum Deairing Mixing Pugmills” — a self-description we report as such. The company also sells ball mills and a raku kiln, and its machines have found uses beyond pottery, in food, automotive and epoxy work; trade listings describe a related coatings business in Ukiah as a division of Peter Pugger.

A pugmill sits upstream of everything else in this series. Before a pot reaches a kiln from Nabertherm or Cromartie, before a glaze from AMACO goes on it, before an Orton cone tells the potter it is done, the clay has to be right. Peter Pugger sells the least glamorous step in the process, and has built a fifty-year brand on it. Its neighbour in the studio’s machine corner is usually the slab roller — the machine Bailey’s founder patented in 1980. The two companies’ first patents were filed about a year apart, in 1979 and 1980 — both for machines that save a potter’s hands rather than replace them.

The logo shows the machine’s working part.

Peter Pugger’s logo sets “PETER PUGGER” in maroon serif capitals inside a maroon box, over a graphic of an auger screw — the spiral that does the work inside every pugmill. It is the only logo in this round that depicts the mechanism rather than the result: not a pot, not a flame, but the part that turns.

That suits a brand whose story is engineering, patents and a name its own founder would reconsider. The maroon is warm and slightly old-fashioned, like the colour of a well-used clay bin, and the capitals are as plain as a machine plate. It is a brand built for the back of the studio, where the reclaim bucket lives. Nobody photographs a pugmill for social media; everybody who runs a busy studio eventually wants one.

For this guide we use a Pugger maroon and a pale clay tone with a sturdy machine slab-serif. The maroon is close to the logo’s own, but these values are our interpretation rather than a published specification, and nothing of the logo or auger graphic is reproduced.

Keep Peter Pugger’s identity on hand — save it to a board in the Made Good inspiration library.