Design the frame before the painting
Designed the frame architecture for the painting before designing the painting itself — the frame's architecture determined the proportion and spatial register the picture would work in. Once the frame was designed (and in some cases built), he moved to the canvas.
Why it matters · The architecture around the image dictates the space inside it, and that space is decided at the beginning of the project, not the end. Most painters treat the frame as ornament added at the end. Stuck's discipline argues that the frame is part of the painting from the first decision.
Build in tempera grassa with passage-specific emulsion
Used a custom tempera-grassa system — egg yolk, walnut oil, dammar, sometimes gum arabic — with subtly different binders by passage. Blue/violet regions used gum-arabic-stabilized emulsion to prevent bleeding; flesh used walnut-oil-heavier emulsion for depth.
Why it matters · A single binder across all passages compromises some of them. Stuck's discipline of binder-per-passage is the cleanest case for treating the medium itself as a working variable. Most painters accept the same medium for everything and produce the same surface for everything.
Patrick Dietemann et al., Analysis of Binding Media in Stuck's Tempera Paintings, 2019
Build figures in three dimensions before painting them
Several paintings developed in parallel with clay or plaster three-dimensional versions of the same figure — The Sin and the Pallas Athena exist in both painted and sculpted forms, and the two media informed each other.
Why it matters · A figure painter who cannot sculpt has trouble making a body weigh something on the canvas. Stuck's figures are built on armatures, not assembled from outlines. Painters who skip the sculptural understanding flatten the figure.
Cartoon every morning before the major canvas
Began the morning by drawing caricatures and illustrations for the Munich magazines Fliegende Blätter and Die Jugend — the cartooning was both paid income and a daily exercise to keep his sense of line and modeling sharp.
Why it matters · A daily warm-up that produces income is methodologically generative. Stuck's discipline argues that maintaining the hand on a small daily task makes the larger work possible. Painters who only ever work on the major canvas atrophy their drawing hand.
Use barium sulfate as ground extender
Ground preparations often included barium sulfate as an extender pigment to produce high luminosity under thin upper layers.
Why it matters · A specific surface luminosity requires a specific ground chemistry. Painters who accept generic priming get generic results. The barium sulfate is engineering — not aesthetic.