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Mechanical Calculator

This fully mechanical calculator is designed to solve times tables in seconds. Entirely 3D-printed, it requires no glue, screws, or additional hardware for assembly, making it both innovative and accessible.

Assembly:

The calculator is designed for straightforward assembly, with all parts snapping or interlocking securely. No adhesives or special tools are needed, ensuring a seamless building experience.

For assembly I have provided a fully assembled model for reference to help you assemble your calculator

3D Printing:

The base model presents a unique challenge, particularly for users who struggle with bed adhesion. To ensure success, using a raft is highly recommended. The base is compatible with printers featuring a build plate of at least 180 x 180 mm.

Recommended Print Settings for All Parts:

  • Supports: None
  • Raft: Yes (recommended for the base)
  • Print Speed:
    • Max 120 mm/s
    • First Layer: 20 mm/s
  • Layer Height: 0.2 mm
  • Infill: 15-20% (Grid or Gyroid recommended)
  • Material: PLA
  • Nozzle Temperature: 200-220°C (depending on filament)
  • Bed Temperature: 50-60°C (if your printer supports it)
  • Cooling Fan: Enabled (100% after the first few layers)
  • Retraction Settings:
    • Retraction Distance: 4-6 mm (for Bowden extruders) or 1-2 mm (for direct-drive extruders)
    • Retraction Speed: 25-40 mm/s
  • Color Change: At layer 3 (optional, for aesthetic details)

This project offers an exciting opportunity for makers to test their 3D printing skills while creating a functional and engaging tool. With attention to detail and the right settings, your calculator will be both precise and durable.

Mechanical Calculator

by KingTut · original on Printables ↗

Hobby & Makers / Other Ideas

♥ 815⬇ 2.3k🖨 11 prints

Print profiles

  • Right Bottom Secure.stl

    ⏱ time and weight estimated after preparation · 1 material(s)

    Made to order: we prepare this file when you order, which adds a few minutes before printing starts.

    Prints on: A1 mini 0.4PLA

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  • Pointer Secure.stl

    ⏱ time and weight estimated after preparation · 1 material(s)

    Made to order: we prepare this file when you order, which adds a few minutes before printing starts.

    Prints on: A1 mini 0.4PLA

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  • Small Top Secure.stl

    ⏱ time and weight estimated after preparation · 1 material(s)

    Made to order: we prepare this file when you order, which adds a few minutes before printing starts.

    Prints on: A1 mini 0.4PLA

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  • Right Arm.stl

    ⏱ time and weight estimated after preparation · 1 material(s)

    Made to order: we prepare this file when you order, which adds a few minutes before printing starts.

    Prints on: A1 mini 0.4PLA

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  • Left Arm.stl

    ⏱ time and weight estimated after preparation · 1 material(s)

    Made to order: we prepare this file when you order, which adds a few minutes before printing starts.

    Prints on: A1 mini 0.4PLA

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  • Left Bottom Secure.stl

    ⏱ time and weight estimated after preparation · 1 material(s)

    Made to order: we prepare this file when you order, which adds a few minutes before printing starts.

    Prints on: A1 mini 0.4PLA

    Order this print
  • Left Pointer.stl

    ⏱ time and weight estimated after preparation · 1 material(s)

    Made to order: we prepare this file when you order, which adds a few minutes before printing starts.

    Prints on: A1 mini 0.4PLA

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  • Right Pointer.stl

    ⏱ time and weight estimated after preparation · 1 material(s)

    Made to order: we prepare this file when you order, which adds a few minutes before printing starts.

    Prints on: A1 mini 0.4PLA

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  • All Parts.stlDEFAULT

    ⏱ time and weight estimated after preparation · 1 material(s)

    Made to order: we prepare this file when you order, which adds a few minutes before printing starts.

    Prints on: A1 mini 0.4PLA

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  • Number Board.stl

    ⏱ time and weight estimated after preparation · 1 material(s)

    Made to order: we prepare this file when you order, which adds a few minutes before printing starts.

    Prints on: A1 mini 0.4PLA

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  • Fully assembled.stl

    ⏱ time and weight estimated after preparation · 1 material(s)

    Made to order: we prepare this file when you order, which adds a few minutes before printing starts.

    Prints on: A1 mini 0.4PLA

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