In this STEAM classroom project, students design and make a custom ruler with LaserMaker. The lesson connects measurement, graphic layout, repeated line patterns, text placement, decorative design, tracing, cutting, and practical product design.

1. Lesson Overview

1.1 Project Goal

Students will design a ruler that is both practical and visually appealing. They will create accurate scale marks, add numbers and units, design the ruler body, include a decorative graphic, set processing layers, and test the final laser processing result.

1.2 Recommended Classroom Use

2. Learning Objectives

2.1 What Students Will Learn

2.2 STEAM Skills Developed

2.3 Responsible Making

A ruler should be safe to handle. Students should avoid sharp corners or sharp decorative shapes that could scratch or hurt someone. They may study other designs for inspiration, but the final design should include their own improvements and creative choices.

3. Real-World Context: What Makes a Good Ruler?

A ruler is a common tool for measuring length and supporting drawing work. Students may see many types of rulers in daily life, including triangle rulers, soft rulers, drawing rulers, and other measuring tools.

In this lesson, students think about the essential elements of a useful ruler, including accurate scale marks, clear numbers, readable units, a comfortable shape, and a design style that fits the intended user.

4. Design and Engineering Considerations

Before drawing in LaserMaker, students should analyze the ruler as a real product. It needs to be readable, useful, safe, and suitable for the selected material.

5. Lesson Procedure

5.1 Measure and Sketch the Ruler

Start by deciding the size and design elements of the ruler. Students should record the length and width in millimeters before creating the digital design.

After measuring, students should sketch the ruler body, scale marks, number positions, decorative graphics, and any text they want to include.

5.2 Draw the Scale Marks with Line Segments

Use the Line Segment Tool to draw a 3 mm line segment in the drawing area. Then use the Rectangular Array tool to create repeated line segments. In the source workflow, students enter 10 for the horizontal number, 1 for the vertical number, and 1 mm for the horizontal spacing to create 10 scale marks.

Change the first scale mark to 5 mm high and the sixth scale mark to 4 mm high, keeping the top edges aligned. This creates a clearer visual hierarchy for the scale.

Select the group of 10 line segments and use Rectangular Array again to repeat the scale pattern until the full ruler scale is complete.

5.3 Add Numbers and Units

Use the Text Tool to enter the number “0” below the scale. In the source workflow, the number is adjusted to 3 mm high and 2 mm wide, then aligned with the center of the first scale mark.

Use Rectangular Array to copy the number across the scale, then edit each number in order from 0 to 20. Align each number with the center of its corresponding scale mark.

Add the unit “cm” to the right side of the scale using the Text Tool, then adjust its position so it fits naturally with the number layout.

5.4 Draw the Ruler Body and Decorative Graphic

Use the Rectangle Tool to draw the ruler body. In the source workflow, the rectangle is set to 240 mm wide and 20 mm high, then aligned with the top of the scale marks.

Open the Select Gallery panel, choose the Animal Graphics category, and drag the ostrich graphic into the drawing area as a decorative element.

Move the ostrich to the right side of the ruler body and resize it as needed. Use the Eraser Tool to remove overlapping line segments where the ostrich and rectangle intersect.

Use the Line Segment Tool and Connect Line Segment function to connect the upper part of the ostrich with the rectangle, creating a closed shape that can be processed correctly.

Finally, use the Text Tool to add a short phrase or design label between the scale and the decorative graphic. In the source workflow, the sample text is “craftsman spirit.”

5.5 Set Processing Layers and Parameters

Select the text object and assign it to the yellow shallow engraving process layer. In the source workflow, the material is set to acrylic plate, the process is set to shallow engraving, and the processing thickness is set to 0.1 mm.

Select the ostrich object, scale marks, and unit text inside the rectangle, then assign them to the red tracing layer. In the source workflow, the material is set to acrylic plate, the process is set to tracing line, and the processing thickness is set to 0.1 mm.

Select the ruler body outline and assign it to the black cutting layer. In the source workflow, the material is set to acrylic, the process is set to cutting, and the processing thickness is set to 3 mm.

Finally, arrange the process sequence as shallow engraving → tracing → cutting. This keeps the material stable while text and line details are processed before the final outline is cut.

5.6 Test, Debug, and Improve

Before making the final ruler, students should test the tracing, engraving, and cutting effects. They can fine-tune parameters for the scale marks, surface text, and cartoon graphics to improve clarity and production quality.

6. Finished Project

After the final settings are confirmed, students can complete the shallow engraving, tracing, and cutting process. The finished ruler should combine accurate scale information with a personalized visual design.

7. Extension Challenge

After completing the custom ruler, students can use LaserMaker to design triangle rulers or other measuring tools. They can follow the sample designs or create a more personalized version with their own graphics, text, and layout.

8. Inspiration Gallery

The following examples can be used for classroom discussion, design inspiration, and student reflection. Encourage students to compare the scale design, edge shape, decorative graphics, readability, and finished material effect.

9. From 2D Design to 3D Thinking

Laser cutting projects can include both flat works and three-dimensional structures. A simple ruler project gives students a foundation in two-dimensional modeling with points, lines, text, and shapes. These same skills can later support more advanced objects made from stacked, nested, or assembled parts.