FlowTray Series – Bottle Rack 32 | Four-Bottle Insert

Organize four hobby bottles inside the FlowTray Series – Model 4 with the removable Bottle Rack 32.

The insert fits the dedicated bay in Model 4 and provides four circular recesses with nominal 32 mm CAD openings. It is intended for paint, adhesive or similar hobby bottles whose dimensions fit the recesses and spacing.

### Features

- Four circular bottle recesses.

- Nominal 32 mm CAD opening diameter.

- Chamfered openings for easier insertion.

- Removable insert designed for FlowTray Series – Model 4.

- Single-piece print with no supports required.

### Dimensions

- Overall size: 75.6 × 79.6 × 16 mm.

- Four nominal opening diameters: 32 mm.

- Nominal recess depth: 13.6 mm.

- Hole-center spacing: 36.4 × 38.4 mm.

- Nominal outer wall thickness: at least 2 mm.

- Nominal base thickness: 2.4 mm.

The 32 mm value describes the CAD opening, not a guaranteed maximum bottle diameter. A bottle body of approximately 31 mm or less is a reasonable starting point. Measure the bottle body and cap before printing. Wide caps may interfere with adjacent bottles, and compatibility with specific paint brands is not guaranteed.

### Compatibility and stacking

The insert has nominally 0.6 mm clearance per side inside the bottle-rack bay of FlowTray Series – Model 4. Actual fit depends on printer calibration, filament and first-layer settings.

Bottle Rack 32 does not have its own stacking interface. Tall bottles will protrude and must be removed before another FlowTray is placed on top of Model 4.

### Suggested print settings

- Orientation: flat base on the build plate, openings facing up.

- Nozzle: 0.4 mm.

- Layer height: 0.20 mm.

- Walls: 3 perimeters.

- Bottom layers: 5.

- Infill: 15–20%.

- Supports: designed to print without supports.

- Material: PLA is a suitable starting option for dry indoor storage.

These are suggested starting settings, not a tested print profile. Use the appropriate profile for your printer and filament, inspect the sliced preview and print at 100% scale to preserve compatibility with Model 4.

### Files and validation

STL, STEP and a geometry-only 3MF are provided together with the editable CAD source. The 3MF does not contain a configured printer profile.

The geometry has been digitally checked as a closed, single-part mesh. The STEP file was successfully re-imported and the 3MF geometry matches the STL.

The model has not yet been physically test-printed or slicer-tested. Actual fit depends on your printer, filament and print settings. All preview images are CAD renderings, not photographs of a printed model.

If you print it, please share a Make and let me know which bottles fit and how the insert fits in your Model 4 tray.