Turn any bottle of hand soap into a foaming dispenser - with a printed pump head that mixes soap, water and air into foam at the nozzle.

Foam Head is a drop-in replacement pump head for a standard liquid soap pump. The outlet points straight down, like a classic foaming dispenser, and inside it two fine mesh stages sit in a straight foaming core so the soap/air mix is pushed through them before the bend to the nozzle. Print it, swap it onto your existing pump stem, fill the bottle with diluted soap, and you have a foaming soap dispenser.

The shape

A smooth, rounded press cap with a wide pressing surface, fine flutes around the neck, a chamfered rim, and a short downward-facing spout. The proportions are made to look at home next to a kitchen or bathroom sink. Overall size is 53.4 x 24 x 30.8 mm.

Design features

- Straight foaming core with two mesh stages, then a bend to the nozzle

- Outlet pointing 90 degrees straight down

- Socket for the pump stem on the underside, 8.0 mm bore, 10 mm deep

- Skirt around the stem that sits clear of the pump collar

- Two files: a fine-mesh version for resin (0.30 mm mesh) and a coarser-mesh version for FDM (0.50 mm mesh)

Colors

Shown in white and in sage green. It is a single-piece print, so use whatever resin or filament color you like.

How to install

Step-by-step instructions with pictures are in the Build instructions tab.

Print setup

Printer: resin (SLA) or FDM. Use the 0.30 mm mesh file for resin and the 0.50 mm mesh file for FDM. Supports are expected under the spout and the elbow. Clear any uncured resin or loose strings from the mesh stages before use.

Pump stems vary between brands, so check the stem diameter and the stroke of your own pump before printing.