A durable replacement cap for the 0.75L / 1L Primus thermos designed for easy 3D printing and everyday outdoor use.

This cap was modeled to fit the Primus Vacuum Bottle, a stainless-steel insulated thermos commonly used for hiking, camping and travel. The original cap can get lost or damaged, so this printable version offers a practical replacement.

Features

• Designed specifically for the Primus 0.75L / 1L  thermos
• Printed in PETG for better durability and temperature resistance
• Tight screw fit to help prevent leaks
• Simple geometry – easy to print without supports
• Ideal for camping, hiking or daily use

Print Settings

• Material: PETG recommended
• Infill: 30–40%
• Supports: Not required
• Layer height: 0.2 mm recommended

If this model helped you save your thermos, please leave a like or make! 🙂