Oral-B iO3 Charging Stand + Brush Head Holder (Single & Duo)

A tidy, one-piece stand for the Oral-B iO Series 3. The original charger drops into the oval ring and sits directly on the counter, the cable runs out through a channel in the back, and two spare brush heads hang upside down so they dry properly.

Two versions

• Single: charger dock + 2 brush head slots (about 85 g, 3 h)

• Duo: same, plus a cup and peg for a second toothbrush (no charging) between the charger and the brush heads (about 113 g, 3 h 20 min)

Features

• Fits the oval iO 3 charger (Type 3757, about 50 x 70 mm). The charger rests on the counter, so the magnetic contact works exactly as normal

• Cable channel out the back, so no glue or tape is needed

• 2 upside-down brush head slots with a cone shape that wedge-fits iO heads

• Drip tray with ribs under the heads, so water doesn't pool

• Soft vertical ridges that wrap around every corner, with a rounded top edge

• Prints in one piece with no supports: the shelf sits on 45° fins

Print settings (tested on a Bambu Lab A1)

• 0.4 mm nozzle, 0.2 mm layers, 15% infill, 2 walls

• Textured PEI plate

• PLA works great. PETG is a nice upgrade for a wet bathroom counter

• The 3MF files are Bambu Studio projects. The STLs work in any slicer, including PrusaSlicer

Fits

Oral-B iO Series 3 with the oval charger. iO 7–9 use a round charger and will NOT fit this version.

Customize it

The model is fully parametric (OpenSCAD file included). Charger size, fit clearance, second toothbrush on/off, number of brush head slots (1–4), slot size, ridge depth and more can be changed in OpenSCAD.