Cash Register for Kids

Bring the grocery store experience home with this highly interactive, functional Toy Cash Register! Designed specifically for kids, this toy features mechanical keyboard switches (fully printable), oversized keycaps, a sliding drawer, and a customizable mechanical tumbler display. It’s the perfect blend of 3D printing engineering and creative playtime.

Whether your little one is running a pretend bakery, a grocery store, or a café, this cash register provides endless hours of tactile, educational fun.

🌟 Key Features

• Oversized Tactile Keyboard: The buttons are scaled up to 200% of a standard keyboard size, making them incredibly satisfying and easy for small hands to press. The mechanical keyboard switches are fully printable. I modified this model to fit this register. Print it in PETG!
• Customizable Keycaps: The model includes several pre-designed keycaps featuring everyday grocery items (apple, cucumber, cheese, bread, fish, and more). Want to expand your store? You can easily design and print your own custom keycaps! 
• 6-Slot Mechanical Tumbler Display: No batteries required! The physical display features 6 modular slots. Spin the tumblers to change prices (using numbers) or show currently scanned items (using product icons). There are 2 versions here: one where the display wheels spin free and another one where they click each time they rotate. I experienced it is extra fun spinning them really fast!
• Built-in Storage Drawer: Features a front handle so kids can slide the drawer open and closed to store their play money and coins. Note: closing mechanism can be a bit hard to pull out - there will be an updated drawer without or with minimal closing force!

🛠️ Assembly & Hardware Requirements

This is an assembly-required project. It is designed to snap together cleanly for a robust finish.

Note: There is 2 ways to install the spring button and the keycaps. In one orientation the keycap goes on very easy but does not stay there so rotate the keycap 90°. The part with the 2 side taps on the spring button should line up horicontally.

🖨️ Recommended Print Settings

To ensure the mechanical elements (tumblers, buttons, and drawer) fit together perfectly, please use the following guidelines:

• Layer Height: 0.2mm (0.12mm recommended for the display tumblers).
• Nozzle: to really get every detail out of the symbols on the keycaps go there with a 0.2 nozzle (especially ketchup)
• Infill: 10% to 12% (Gyroid).
• Supports: Minimal supports are needed for the body display. everything else prints support free!
• Material: PLA works perfectly. Use PETG for the Spring Buttons so that they remain springy!

🎨 Customize Your Register!

The design is completely modular. Feel free to remix the keycap files to include local currency, unique foods, or custom logos. If you make one, please upload a photo of your color combination—I’d love to see your prints!