Mini Oil Distribution Transformer with Core

A detailed miniature model inspired by oil-filled distribution transformers commonly used in electrical substations and power distribution networks.

Designed specifically for FDM 3D printing, this compact display model recreates the recognizable appearance of a real distribution transformer while remaining practical to print on standard FDM printers.

One of the key features is the removable internal transformer core with coils, allowing the inside assembly to be taken out and displayed separately — adding both realism and educational value.

Features

✅ Inspired by real oil distribution transformers
✅ Used in substations and power distribution systems
✅ Designed for FDM printing

✅ Self-threading screw holes – no tapping required
✅ Removable internal transformer core with coils
✅ No resin printer required
✅ Great for electrical engineers, electricians, power industry workers, and enthusiasts

Removable Internal Assembly

The model includes a removable transformer core with windings, allowing you to:

• display the internal structure separately
• better understand transformer construction
• add an educational and realistic touch to the model

Hardware Required

Only minimal hardware is required for assembly:

M2 socket head screws (hex / Allen head):

• 6 mm
• 10 mm
• 12 mm

Printing

• Optimized for FDM printers
• Small details may benefit from slower print speeds

Assembly

The model consists of multiple printed parts assembled using standard M2 screws.

The internal transformer assembly is removable, allowing easy access to the detailed inner section.

1) attach insulators to the lid using screws
2) screw the first part of the magnetic core to the lid
3) attach coils
4) screw the lower part of the magnetic core
5) screw the white U profiles
6) glue the U profiles to the container as a chassis

Scale

This is a compact miniature display model.
A coin shown in the photos provides a size reference.

Perfect for:

• Electrical engineers
• Electricians
• Power distribution professionals
• Technical education
• Substation enthusiasts
• Workshop or desk decoration

If you print one, feel free to share your build!