Design a 3D Printable Pen

A lesson where students learn about linear sequences before designing a 3D printable pen

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**This lesson is part of The PrintLab Classroom lesson portal. To view details or to get access to the full portal, CLICK HERE**


In this 1 hour lesson, students will be designing and 3D printing a functional pen. The lesson begins with a series of mathematical calculations on linear sequences. The calculations help students determine the measurements of the pen, which is designed in Tinkercad in the main part of the lesson. Finally, one of the pens is 3D printed and once complete, a Bic biro cartridge slots into the centre to make it functional. Enrolling in the lesson will give you complete access to the teacher training material and lesson documents. This includes content to help you prepare and deliver the lessons along with design tutorials so you become familiar with the process prior to teaching it in the classroom.

Subject Areas

The lesson can be incorporated into the study of maths, computing, art & design and design technology. The material can be adapted for ages 7-16.

Learning Criteria

In this project students will:
- develop an understanding of linear sequences
- use Tinkercad software to design the shell of a pen to set dimensions
- develop an understanding of 3D printers and how they operate

Equipment List

Each student will require:
1 x laptop/computer with mouse and internet access
1 x pen/pencil
The teacher will require:
1 x 3D printer and PLA filament (
1 x laptop/computer with mouse, internet access and slicing software for the 3D printer
2 x Bic cristal biro cartridges
1 x demonstration model (STL provided in lesson materials)