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Miniatures, Article 6: From Lead to Plastic to 3D Printing

Many materials, many paths.

Editorial illustration comparing a metal casting mold, plastic sprue, flexible figure, generic prepainted dial-base miniature, digital sculpt, and safely enclosed resin printer.

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Pick up two tabletop miniatures made forty years apart and the first difference you notice may be the weight.

The older figure settles into your palm with a small metallic thud. Its spear may be bent. A thin seam follows the edge where two halves of a mold met. The newer figure might come from a plastic sprue, resin mold, print service, or machine on a player’s desk. Its sculptor may never have touched clay, wax, or putty.

That sounds like a march from old technology to new technology. The real history is more interesting. Metal did not simply surrender to plastic, and plastic did not disappear when 3D printers arrived. Each material opened a different door. Today, all of them remain in use.

The miniature in the spinning mold

For generations of hobby gamers, a fantasy or science-fiction miniature usually meant metal. A sculptor made a master. Workers arranged masters in rubber or silicone, created a mold, cut gates and vents, and poured low-melting alloy into the center while it spun. Centrifugal force drove the metal into the cavities. The cool castings were removed, inspected, and trimmed.

Reaper Miniatures still describes this process in its production material. Ral Partha Legacy has also documented the physical steps, from mold layout and vulcanization through gate cutting and test casts. Metal spin casting remains practical for relatively short production runs because its tooling is different from the expensive industrial equipment used for large-volume hard-plastic kits.

The language around the metal can be slippery. “Pewter” is primarily a tin-based family of alloys, not one guaranteed chemical recipe. Modern formulations commonly use metals such as antimony, copper, or bismuth as hardeners, while older pewter could contain lead. “White metal” is similarly broad. A company may document a specific lead-free alloy, but the word pewter alone does not prove a figure is lead-free.

That distinction matters when telling the story of the hobby’s move away from lead.

There was no single lead-ban moment

It is tempting to compress the 1990s into one sentence: lead was banned, so miniature companies switched to pewter. The surviving record does not support that version.

Government regulation and proposed restrictions created real pressure. So did concerns from customers, retailers, workers, and overseas markets. Yet companies did not all change at the same time or for the same reason.

New York offers a revealing example. In 1993, legislators debated a miniature-specific exemption from incoming lead rules. They distinguished adult collectible figures from children’s toys, and the resulting provision permitted a waiver for qualifying miniatures. That is not a universal ban.

Citadel Miniatures provided another complication in a 1997 account. Company representative Paul Robbins described developing a lead-free white metal after encountering resistance to lead products in some overseas markets. He also stated that Citadel had chosen to make the change rather than being directly forced by legislation.

Regulation, market access, safety concerns, alloy development, and company policy pushed the trade toward lead-free products in different combinations. Reaper currently identifies its metal range as lead-free pewter and dates its fully lead-free retail line to January 2018. That date belongs to Reaper, not every manufacturer.

Plastic did something different

Hard-plastic injection molding changed what companies could offer at scale. A multipart sprue could hold weapons, heads, arms, equipment, and alternate poses. Players gained more control over assembly, conversion, and army appearance. Manufacturers gained a repeatable process suited to high-volume production.

The tradeoff was investment. Games Workshop reported spending £5.7 million on new plastic-miniature tooling in 2021/22. Earlier reporting described factory investment that doubled its injection-molding capacity. One company cannot define an industry, but the figures show why hard plastic favors products able to support substantial tooling costs.

Other plastics answered other needs. Reaper’s original Bones material is described as flexible PVC, designed to be lightweight and resilient. Resin has supported detailed figures and shorter runs, though “resin” can mean several different processes. Games Workshop separates its Forge World resin range from Citadel plastic production. Newer systems such as SiOCAST combine digitally prepared masters, silicone molds, and injected thermoplastic material.

None of these options erased the others. Metal offered one balance of tooling and feel. Hard plastic offered another balance of volume, assembly, and customization. Flexible plastic lowered the barrier to durable, ready-to-handle figures. Resin and hybrid systems supported different kinds of detail and production. The history branches instead of moving in a straight line.

The figure that kept its own records

Pre-painted figures existed before Mage Knight. A preserved hobby-history account describes Bluebird Toys’ 1997 Havok as a pre-assembled, partly pre-painted soft-plastic skirmish line. Because the surviving evidence is collector history rather than a company archive, Havok is a useful precedent, not proof of a categorical first. Mage Knight’s importance was not that WizKids invented every ingredient.

Its breakthrough was the way those ingredients worked together.

Mage Knight: Rebellion arrived in November 2000 with pre-painted plastic figures in opaque packs, randomly selected and issued at differing rarity. A player could open a package and begin without assembly or painting.

WizKids’ patented base contained an indexed rotating dial. Windows revealed the character’s statistics. When the figure took damage or changed state, the player turned the base until it clicked, revealing new values. Health and abilities traveled with the figure instead of living only on paper.

That combination mattered: a ready-to-play painted figure, a self-contained combat dial, and trading-card-style rarity and distribution. Mage Knight turned the miniature into a position marker, character record, game mechanism, and collectible object at the same time. Later Clix games carried the concept into other settings and licensed characters.

Calling Mage Knight the first game ever to use painted miniatures would erase its precedents. Calling its combined system influential is well supported.

When the master became data

Digital sculpting changed the path between artist and object. A sculpt created on screen could feed several production methods. It might become the basis for a hard-plastic sprue, a printed master used to make a casting mold, or a file sent directly to a 3D printer.

Hero Forge brought that shift to consumers. Its 2014 Kickstarter offered a browser-based character builder. Players chose features, clothing, equipment, and poses, then ordered a one-off miniature. The campaign drew 5,189 backers and raised $360,403.

The player no longer needed to find a stock figure that was “close enough.” A particular sword, stance, outfit, or species could be selected before the object existed.

STL marketplaces pushed the change further. MyMiniFactory built creator storefronts and subscription services. Paizo Printables now distributes official Pathfinder STL releases through a connected subscription. Hero Forge offers downloadable STLs alongside physical and digital products. In this market, the thing being purchased may be a reproducible design rather than a finished object.

Within the relevant file’s license terms, the collector can become the manufacturer.

A factory on the hobby desk

Two home-printing methods commonly serve different miniature needs. Fused-filament fabrication, usually called FDM or FFF, melts thermoplastic filament and deposits it in layers. It is often used for terrain, large forms, and pieces where extreme surface detail is less important. Vat-resin printing cures liquid photopolymer with light and is commonly chosen for smaller figures requiring fine detail and smoother surfaces.

Neither process is magic, and neither is risk-free. The National Institute for Occupational Safety and Health warns that uncured photopolymer resin and acrylates may cause skin sensitization, dermatitis, or asthma. Printing and post-processing can also release particles and gases. Environmental Protection Agency research identifies volatile organic compounds and ultrafine particles in 3D-printing environments.

That does not mean home printing should be presented as frightening. It means the craft now includes ventilation, enclosures, careful material handling, curing, cleanup, and waste practices. The manufacturer’s responsibilities have moved onto the player’s desk along with the creative freedom.

The miniature’s journey once began with a sculptor’s physical master and a spinning mold. It can now begin as polygons on a screen and arrive as a file in someone’s inbox. Yet metal figures still come out of rubber molds. Plastic sprues still snap together. Resin still captures fine forms. Players still sand, glue, prime, paint, and repair.

The revolution did not kill the old ways. It multiplied the routes from imagination to a figure in the hand.

AI-Assisted: This article was developed with AI-assisted research, fact-checking, and editorial support. Ken Whitman approved this final text for publication.

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Miniatures Series

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Miniatures, Article 6: From Lead to Plastic to 3D Printing

Miniatures, Article 6: From Lead to Plastic to 3D Printing

The miniature in the spinning mold

There was no single lead-ban moment

Plastic did something different

The figure that kept its own records

When the master became data

A factory on the hobby desk

Sources Used

Continue the seven-article series

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