Miniature Painting
Zenithal Priming and Slap Chop, Explained Properly
Zenithal priming means painting your miniature's lighting before you paint its colors: black primer everywhere, grey sprayed from 45 degrees, white dusted from directly above, so the bare mini already looks lit by the sun. "Slap chop" is the budget version, where a heavy drybrush replaces the sprays. Put translucent speedpaints over either and the pre-painted light shines through the color. It's the technique that made beginner minis stop looking like beginner minis, and it takes ten minutes to learn.
Why pre-paint the lighting?
Traditional painting builds light after color: basecoat, then shade the recesses, then highlight the tops, layer by layer. Zenithal flips the order. You establish where light and shadow live first, in neutral black-to-white, and then let translucent paints carry the color while the values underneath do the shading.
The payoff is huge for exactly the painters who need it most: one coat of speedpaint over a good zenithal reads as a shaded, highlighted mini, because it is one. The values were painted in the first ten minutes, in the easiest medium there is: spray and dust.
The rattle-can version
- Prime the whole mini black. Normal priming rules apply: thin passes, dry weather, 20-30 cm.
- Grey from roughly 45 degrees above, rotating the mini so every side catches some. Don't chase full coverage; the deepest recesses should stay black.
- White from directly overhead, a light dusting that catches only the upward-facing surfaces: helmet tops, shoulders, nose. This is a whisper, not a coat.
Three rattle cans, ten minutes, done. Squint at the result: a tiny black-and-white photograph of your mini at noon. If it reads right in grayscale, it'll read right in color; that's the whole theory of values, smuggled into your process via spray can.
Slap chop: the drybrush version
No spray space, or no grey can? Prime black, then heavily drybrush light grey over everything, then a lighter drybrush of white on the highest points. The name is self-deprecating and the results aren't; the drybrush version actually produces more edge definition than sprays, since drybrushing catches every raised texture. Plenty of painters prefer it on principle, and it costs one cheap brush and two pots of paint.
Either version, the next step is the same: translucent color over the top. Speedpaints are the classic partner, thinned regular paints (glazes) the traditional one, and the usual speedpaint rules apply about which surfaces suit them.
Where the technique breaks (honesty section)
Zenithal is not a cheat code for everything. Opaque paints ignore it entirely; if you basecoat over your beautiful pre-lighting with solid color, you just spent ten minutes priming fancy. Metallics mostly ignore it too. Large smooth armor panels show spray mottling through translucent coats, which is the same flat-surface problem speedpaints always have. And highly saturated schemes (bright yellow, clean white) want traditional underpainting instead.
So: zenithal plus speedpaint is the fast lane for organic, textured minis, which is most of a D&D collection and every batch project. Display pieces and power armor still earn the traditional route. Use the right lane and the ten-minute prime does an hour of shading's work.
Frequently asked questions
What's the difference between zenithal priming and slap chop?
Same idea, different tools: zenithal uses black, grey, and white sprays from different angles; slap chop replaces the sprays with heavy drybrushing over black primer. Sprays give smoother gradients, drybrush gives crisper texture; both feed the same paint-over-values workflow.
Do I need an airbrush for zenithal priming?
No; rattle cans do it well, and the drybrush version needs no sprays at all. Airbrushes give the smoothest zenithal gradients, which matters for display work and not much for tabletop.
What paints go over a zenithal prime?
Translucent ones: speedpaints, contrast paints, inks, and thinned glazes. Opaque basecoats cover the pre-shading completely and waste the technique; if you're basecoating traditionally, prime normally instead.
Why does my slap chop look chalky?
Too much white, too aggressively drybrushed; the top dusting should hit only the highest points. Chalkiness also comes from cheap white paint; a smooth grey does most of the work, with white as seasoning.
Is zenithal priming good for beginners?
It's arguably the single best beginner technique: ten minutes of spraying or drybrushing replaces the hardest skill in painting (placing shadows and highlights), and one coat of speedpaint finishes the job. Most modern learn-to-paint advice starts exactly here.