Drain Hair Snake — Barbed Clog Remover

A flat, flexible, barbed drain hair snake that rakes hair clogs

out of a shower, bath, or sink drain. Push the tip down the drain,

twist, and pull — the backward-pointing harpoon barbs grab the hair

and drag the clog back out. One-piece print, no supports, no assembly,

no loose parts.

Size: 240 × 30 × 2.6 mm (fits a 256 mm bed straight). Bump

spine_lenin the SCAD and rotate the plate ~45° on the bed for a

longer reach.

Barb geometry. The barbs are harpoon-shaped: the tip-side edge is

a long gentle ramp that slides in past the hair, while the handle-side

edge is a short undercut that catches and holds on the pull. Barbs

alternate left/right every half-pitch for staggered, full-width

coverage. The handle ring doubles as a hang loop and as a stop so the

strip can never disappear down the drain.

Print orientation. Lies flat on the bed; every barb is an in-plane

cut, so it prints with no supports and no brim. The thin strip

flexes out of plane to follow the bend of a P-trap.

Material — use PETG. The barbs are thin cantilevers. **PETG is

strongly preferred** because it flexes; PLA is brittle and snaps the

barbs on the first stubborn clog. Print walls thick, modest infill.

Parametric. Edit the variables at the top of

drain_hair_snake.scadto retune:

spine_len(barbed strip length), thickness(strip / flex member),

barb_len(how far the barbs stick out), barb_back(undercut depth

= catch strength), barb_pitch(spacing per side), and

ring_od/ ring_id(the handle loop).

The gallery shows the printed strip (white) plus isometric and

top-down renders of the barb pattern and finger loop.