Rugged Waterproof Tough Case Seal & Steel Hinges

Rugged Waterproof 3D Printed Tough Case

Inner Dimensions: 115 x 76 x 38 mm

This heavy-duty 3D printed tough case is designed for real-world outdoor use.
It features a compressed TPU sealing gasket, reinforced steel-pin hinges and durable snap-fit latches for maximum reliability.

The design has been printed and tested multiple times and refined for strength, fit and long-term durability.

🔧 Key Features

• Fully waterproof design with compressed TPU gasket
• Reinforced hinge system using 2.4 mm stainless steel wire pins (welding rod)
• Strong PETG snap-lock latches
• Optimized for durability and repeated use
• No supports required
• Modular multi-material construction
• Designed for functional, real-world applications

🧱 Materials Recommendation

For maximum durability:

• Main Case (Base & Lid): ABS recommended for high impact resistance
• Gasket: TPU 85A
• Clips / Latches: PETG
• Optional: Carbon fiber reinforced filament works excellent for added stiffness

ABS is strongly recommended for outdoor and rugged use due to its superior impact strength.

🖨 Print Settings

• Layer height: 0.2 mm
• Infill: 20–30% recommended
• Perimeters: 2-3 walls
• No supports required

Print orientation is optimized for strength and dimensional accuracy.

🔩 Assembly Instructions

Hinge System

The hinges are reinforced using:

• 2.4 mm stainless steel welding wire

Cut the wire to the required length and press-fit into the hinge channels.

⚠ Important:
The hinge holes in the lid must be drilled to 2.5 mm to allow smooth rotation.
Do not drill the base hinge holes — they are designed for a tight press fit.

This ensures:

• Secure pin retention
• Smooth lid movement
• Long-term mechanical durability

Gasket Installation

The TPU 85A gasket is printed separately and inserted into the dedicated groove. It may be glued in place with super glue.
The lid compresses the gasket when closed, creating a reliable waterproof seal.

The compression system ensures proper sealing without excessive latch force.

🏕 Ideal For

• Camping gear
• Electronics protection
• Tools & spare parts
• Survival kits
• Travel storage
• Field equipment

⚙ Tested & Proven

This design has been printed in multiple material combinations and tested for:

• Fit accuracy
• Seal compression
• Mechanical hinge durability
• Long-term latch performance

The steel pin hinge system significantly increases lifespan compared to fully printed hinges.