Make A4 size clipboard

I provide 3D data and blueprints for personal use. Material: steel, thickness: 5 mm (0.2 inches).

Recommended mold fasteners:

• M6x45 (1.77 inches) bolts (minimum 4)
• M6 washers
• M6 nuts

Clipboard Production Guide

I have tested HDPE, PP, and PLA with satisfactory outcomes. Experiment with various colors and bottle cap designs. You will need approximately 320-350 grams (11.3-12.3 ounces) per clipboard.

Before experimenting with new materials, document the quantity used for reference in future production.

Ensure the mold is free of impurities, dust, or residual plastic from prior use; smooth sandpaper is effective for this task. Apply a mold release agent or oil to prevent sticking, ensuring the oil's smoke point exceeds 230°C (446°F).

For further details on oil smoke points, consult Wikipedia.

I use an IKEA Görlig electric oven. Adjust the temperature according to the material type. For HDPE and PP, I set the temperature to 225°C (437°F). Place the mold in the oven for 35 minutes and set a timer.

Attention: Use heat-resistant gloves when handling the mold from the oven.

After baking, press the mold. The cooling process takes 20-30 minutes. Opening the mold earlier may risk deformation.

Trim the edges with a knife. Sand the surface if needed. Drill two M4 (0.157 inch) holes according to your clip design. Screw-type rivets are recommended for easy and tool-free modifications to the board with clips.

Rivet sizes:

• A: 4mm (0.157 inch)
• B: 6mm (0.236 inch)
• C: 10mm (0.394 inch)
• S: 4mm (0.157 inch)

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More information is available here: linktr.ee/plastmakers

Thank you.

Tom