Arcane 3D Printing Figures in Metal

Most Arcane figure files start as digital sculpts or game rips. The mesh is dense, non-manifold in places, and scaled for a 1/6 or 1/8 display piece. We do not print that file as-is. The first step is a DFM pass: check wall thickness, find self-intersections, close open shells, and split the model into printable chunks.

A typical figure is split into four to eight pieces. Head, torso, arms, legs, base. Splitting lets us orient each piece so the critical surfaces face away from the build plate. It also keeps support marks off the face and hands, which is where buyers look first.

Layer height runs 20–30 μm for SLM on a 1/8 figure. A 200 mm tall piece takes roughly 18–30 hours of machine time depending on volume and part density. After the build, the part goes to stress relief, then support removal, then baseplate cut-off.

Metal SLM does not print color. If a buyer wants the Arcane palette, we finish it in post. Anodizing gives clear, black, or dyed tones. Gold and silver plating read well on small jewelry-scale pieces. Powder coating is too thick for facial detail, so we avoid it on faces.

Minimum wall for reliable SLM in aluminum is about 0.4 mm. In stainless and titanium, 0.3 mm holds if the wall is short and supported. Thin walls below 0.3 mm look fine in the slicer and fail in the machine. They curl at the top edge.

Overhangs below 45° from horizontal need support. On a figure, hair, cloaks, and weapon blades are the usual offenders. We can rotate the part to reduce support, but the rotation must keep the thin sections stable.

Small features like fingers, jewelry, and hair strands are where resin still wins. A 0.5 mm finger in resin prints clean. In metal it may survive but it will be fragile and cost more to finish than it is worth.

If a model has fine surface texture meant to look like cloth weave, SLM will soften it. The laser melt pool is roughly 0.1–0.15 mm wide. Detail smaller than that gets averaged out. For those files, resin or vacuum casting is the better route.

Metal SLM parts shrink as they cool. For 316L we plan on roughly 0.2–0.3 percent linear shrink; for AlSi10Mg, closer to 0.3–0.5 percent. That matters when a shoulder peg has to slide into a socket.

The fix is not to fight shrinkage. It is to machine the joints. We print the peg and socket slightly oversize, then turn or mill them to a slip fit. Bores and pins hold ±0.005 mm on the 5-axis centers.

For figures that need to stand on a base, we machine the base underside flat. A printed bottom face is never flat enough to sit without a wobble. One facing pass on a 3-axis mill solves it.

Magnetic joints are common on display figures. We machine a small pocket in the torso and the base, then press in a neodymium magnet. The pocket holds ±0.02 mm so the magnet does not rock. Epoxy fills the gap.

Threaded connections are possible but avoid them below M3 in metal. A printed M2 thread has poor fatigue life. Use a machined insert instead, or a press-fit pin with a set screw.

As-built SLM has a matte, slightly rough skin. Bead blasting with fine glass media brings it to a uniform matte and removes loose powder from internal channels. That is the baseline for a display figure.

For a polished look, we hand-polish the high points and leave recesses matte. That contrast is what makes small details read at a distance. Full mirror polish on a whole figure looks flat and hides the sculpt.

Colored finishes follow the character palette. Clear anodize keeps the metal tone. Black anodize on aluminum gives a dark base that takes acrylic or enamel well. Gold plating works on small accessories and jewelry-scale parts.

Laser engraving marks names, edition numbers, or a base plate. Minimum character height is 1.5 mm so the mark stays legible after finishing. Below that it fills in.

Every part is inspected before it ships. We check critical dimensions, joint fits, and surface condition. Reports are available on request.