Waffle

Good for

Breakfast jokes, trays, a strong grid look.

Print notes

• Depth 0.4 to 1.5 mm for a 0.4 mm nozzle (as written: 1.2 mm).
• Best on walls, printed upright. On a flat top, use thin layers (0.12 mm or less).
• Fade it out over the bottom 3 mm so the first layers are flat and stick to the plate.
• Not printed yet: these notes come from the geometry. The test cube will tell us more.

The formula

The real code this page runs: give it a point (U mm across, V mm up) and it returns the height there, in mm. Push the surface out by that much and the texture is real geometry.

function waffle(U: number, V: number, p = 6.0, amp = 1.2) {
  const s = Math.abs(frac(U / p) - 0.5);
  const t = Math.abs(frac(V / p) - 0.5);
  return amp * clamp((Math.max(s, t) - 0.32) / 0.08, 0, 1);
}

/** The fractional part, 0..1. */
function frac(x: number) {
  return x - Math.floor(x);
}

function clamp(x: number, lo: number, hi: number) {
  return Math.min(Math.max(x, lo), hi);
}

Printed