Specialty grids — seven non-square systems for work the standard grid can't handle.

The defining feature of each specialty grid

The seven grids in this category each have a distinctive structural property that suits them to particular kinds of work. A quick reference:

• Triangular: equilateral-triangle tessellation — a 60-degree triangular lattice. Used for crystallography diagrams, tessellation art, and as the underlying lattice of isometric projection. The same lattice spaced as dots gives you isometric dot paper for 3D sketching.
• Hexagonal: regular-hexagon tessellation. Used for quilting (English paper piecing), as a hex grid overlay for tabletop hex maps and wargaming, beehive-pattern and mosaic-grid decoration, and certain types of map and game-board design.
• Radial / Circular: concentric circles + radial divisions emanating from a centre point. Used for mandala design, sundial layout, compass-rose composition, and certain types of cartographic projection.
• Dot: regularly-spaced dots without connecting lines. Used for bullet journaling (the de facto standard since around 2013), sketching grid that is less visually intrusive than a full square grid, and bead-loom pattern design.
• Diamond / Rhombus: a diamond rhombus grid built from rhombus tessellation. Used for argyle textile patterns, certain types of brickwork layout, and decorative borders.
• Polar / Spiral: logarithmic spiral with radial divisions. Used for nautilus-shell-style composition, certain types of natural-form study, and decorative borders that need a sense of motion.
• Cross-hair: a single horizontal and vertical line at fixed positions, plus optional secondary grid. Used for proportional sketching from reference, basic camera-alignment for product photography, and as a minimal compositional guide for fast work.

Combining specialty grids — when layering makes sense

Most projects use one specialty grid at a time, but a few combinations are genuinely useful when layered. Hexagonal + radial works for mandala designs that use a hex lattice as the structural skeleton with rotational symmetry around the centre. Dot + cross-hair gives bullet-journal users a precise reference for centring sketches without the visual noise of a full grid.

Why specialty grids exist

Picking the right specialty grid for your craft

Tabletop game maps: hexagonal for terrain-based games (Catan, Civilization, most wargames) where movement and area-of-effect are non-Euclidean; square for chess-derived games (D&D battle maps, Warhammer skirmish) where straight-line movement matters. Triangular grids are rare in tabletop but show up in some Eurogames.

Knitting: diamond grid for argyle, fair isle, and any pattern where stitch shape matters at the chart level. Square grid acceptable for colorwork charts where you only care about color placement, not stitch shape. Knitters should also note: stitches are taller than wide on standard knit fabric (~5:4 ratio), so transferring a square-charted design to actual fabric will compress it vertically — use a custom-aspect rectangular grid (Basic Drawing category) to correct for stitch gauge.

Cross-stitch and embroidery: dot grid is the standard — each dot represents one stitch position, and the absence of lines around each stitch makes counting easier. Square grids work but visually clutter the pattern.

Mandala painting and sacred geometry: radial / polar grid with 12, 24, or 48 division spokes depending on complexity. Combine with cross-hair to enforce 4-fold symmetry. The Sacred Geometry category has dedicated overlays (Sri Yantra, Flower of Life) for more specific traditional patterns.

Mosaic and tile layout: hexagonal for honeycomb-tile patterns (most ceramic floor tile), diamond for diagonal-set square tiles, triangular for less common triangular-tile compositions. The grid lets you plan tile placement before mortar commits the design.

Bullet journals and planners: dot grid in 5mm spacing is the Bullet Journal Method standard. Light enough to disappear behind handwriting, geometric enough to align tables and headers cleanly.

Cell size and density — getting the grid right for the work

The seven specialty grids each have a defining structural unit (hexagon, triangle, rhombus, dot, circle) and the size of that unit dramatically affects the work the grid supports. A short guide to cell-size decisions:

• Hexagonal grid for quilting: 1-inch hexagons are the standard for English paper piecing. Larger hexagons (1.5-2 inches) for modern baby quilts; smaller (0.5-0.75 inch) for fine grandmother's-flower-garden patterns.
• Hexagonal grid for tabletop gaming: 25mm or 1-inch hexes are the most common in Warhammer, Battletech, and historical wargaming. Smaller hexes (15mm) for high-density skirmish games; larger (40mm or 50mm) for naval and large-scale battle games.
• Triangular grid for tessellation art: 1-2 cm triangles work for hand-painted murals; 5mm for fine pen work; very small (1-2mm) for detailed decorative borders.
• Dot grid for bullet journaling: 5mm spacing is the de facto standard (Leuchtturm1917, Rhodia). 4mm for tighter handwriting; 6-7mm for larger handwriting or sketching.
• Radial / Circular grid for mandala work: typically 6 or 12 radial divisions for hand-drawn mandalas; 24 or 48 divisions for more elaborate sacred-geometry compositions.
• Diamond / Rhombus grid: matched to the planned brick or tile dimensions when used for masonry layout; matched to the planned stitch count when used for cross-stitch patterns.
• Cross-hair grid: spacing depends on the reference photo's resolution and the precision required — typically 5-10% of the canvas width for precision work, larger for casual proportional sketching.

Getting the cell size wrong is the most common specialty-grid mistake. A 1cm hex grid for a wall-size quilt design has too many hexes to track; a 5cm hex grid for a tabletop game has too few for tactical positioning. Match the cell size to the work.

Print sizing for specialty paper

All seven specialty grids export at standard paper sizes (US Letter, A4, A3, 11×14, 16×20). For pre-printed equivalents to compare cost: hex paper sells at ~$10/100-sheets, isometric pads at ~$8/50-sheets, dot grid notebooks at $15–25 each. Free PDF export from this tool replaces all of those.