3D model descriptionDesigned by HIDAKA.Practical 3D printable designs from Japan.

This aquarium tunnel was created to solve one simple everyday problem.Resize the model in your slicer to match your preferred visual appearance and overall aquarium layout.

Many aquarium shelters require supports during printing.

This model is specifically designed to print support-free by rotating it approximately 35° before slicing.

The result is a practical fish shelter that is easy to print, easy to clean and strong enough for everyday aquarium layouts.

Simple.Reliable.Easy to print.

Compatible with

• Freshwater aquariums
• Small fish
• Shrimp
• Corydoras
• Plecos
• Other small aquatic animals

Features

• Optimized for support-free printing at approximately 35°
• No supports required
• Internal reinforcement for improved rigidity
• Helps support small aquarium stones or decorations
• Smooth minimalist design
• Easy to clean
• Suitable for most rigid filaments
• Practical shelter for fish and shrimp

Recommended Material

• PLA
• PETG
• ABS
• ASA

Most rigid filaments are suitable for this model.

TPU is not recommended.

Usage Tip

Because this model is lightweight, it may move depending on your print settings and aquarium conditions.

If additional stability is desired, simply place a small aquarium stone or decoration on top.

The reinforced top surface is designed to support everyday aquarium layouts.

This model is released FREE as part of the HIDAKA Series.

If this design makes your aquarium easier to enjoy, please consider following HIDAKA.

More practical, problem-solving designs are coming soon.

License

Creative Commons Attribution–NoDerivatives 4.0 International (CC BY-ND 4.0)

You may

• Download, print and use this model
• Share the original file with attribution
• Sell physical 3D printed products
• Credit HIDAKA as the designer

You may not

• Modify the digital model
• Create derivative works

• Remove or alter the embedded HIDAKA logo

• HIDAKA

Problem-solving engineering from Japan.

About HIDAKA

Problem First.

Real problems.Practical engineering.Continuous improvement.

HIDAKA is the personal brand of a Japanese manufacturing engineer with more than 20 years of automotive product development experience.

Every design begins with a real-world problem.

The solution should be simple.The design should be practical.

Every design is improved through real-world use and continuous refinement.

3D printing settingsDefault slicer settings are sufficient for most FDM printers.

This model has been successfully printed using the settings below.

Printer

Any FDM 3D printer

Layer Height

0.20 mm

Nozzle

0.4 mm

Supports

Not required

Brim

Not required

Infill

20% or higher recommended

Material

PLA recommended(Other rigid filaments are also suitable.)

Print Orientation

IMPORTANT

Rotate the model approximately 35° before slicing.

This orientation is essential for support-free printing.

Please refer to the images for the correct print orientation.