Soap Dish — Wooden-Slat Cradle, Parametric Wood-Grain

Single-piece slatted soap dish that cradles oval and brick bars

without rolling. Five saddle planks shape a gentle valley for the

bar; two flat fenders at each end keep larger blocks from sliding

off. Drainage runs straight through the slat gaps onto the counter

or a tray underneath.

Footprint: ~148 × 85 × 19 mm. Inner clearance between fenders

is ≥ 110 mm — fits any standard bar (typical bath bars are 75–100 mm

long; oval bars up to ~110 mm). Slat gaps 12 mm so water and lather

fall right through.

Wood-grain finish: parametric half-pipe grooves run along both

broad faces of every slat, pitch 1.5 mm, depth 0.5 mm, with a

±0.3 mm jitter so the lines aren't perfectly parallel. Prints best

in wood-fiber PLA — the grain reads as real timber and the matte

fibre surface stays grippy when wet. Stack Bambu fuzzy skin on

top of the SCAD grain for an extra-rough finish.

Print orientation: flat on the bed (slats vertical). The five

saddle slats span between the side rails as ~61 mm bridges at the

slat bottom — enable supports (or a brim under the slat

bottoms) so the bridge layer doesn't sag in PLA. With supports the

slats come out crisp; without them you'll see drooping under the

saddle. Wood-fiber PLA tolerates supports well — they snap off

clean.

Parametric: edit the variables at the top of soap_dish.scad

to retune for your bar — base_x / base_yfor footprint,

slat_count / slat_w / slat_gapfor the deck pattern,

slat_h_max / slat_h_minfor the saddle depth, grain_pitch /

grain_d / grain_jitter for the wood-grain look.

The two-photo gallery shows the bare dish (slat detail, beige

wood-fiber PLA) and the dish in use under a real soap bar on a

wooden counter.