2 stone in kg is approximately 12.7 , rounded to one decimal place .

3D Printing Specifications

The model is designed with a flat base and raised text, making it a straightforward print that requires no supports.

• Material Choice: PLA is highly recommended for the best detail on the text, while PETG is a great alternative if the tool will be used in a high-traffic or warmer environment.
• Layer Height: Set your slicer to 0.15mm or 0.20mm. This ensures the curves of the letters are smooth and the numeric output is easy to read.
• Infill Density: Use 15% to 20% infill with a Grid or Gyroid pattern. This provides a sturdy base without wasting excessive filament.
• Support Settings: No supports are required. The model is designed with a flat bottom and vertical text extrusions that print perfectly on any standard 3D printer.
• Bed Adhesion: A simple Skirt is usually sufficient. If you experience any corner warping on the base plate, a Brim can be used for extra stability.

Achieving the Red-on-White Look

To get the professional red-on-white finish you requested, you can use one of these two common 3D printing techniques:

• Filament Color Swap: Start the print with White filament for the base. Program a "Pause at Height" or "M600" command in your slicer at the 5.0mm mark (where the text begins). At the pause, swap to Red filament to finish the raised lettering.
• Post-Print Painting: Print the entire model in White. Once finished, use a Red acrylic paint marker or a small brush to carefully color the top surfaces of the raised letters and heading.

Post-Printing & Usage Tips

• Surface Smoothing: If the top of the text feels slightly rough, a light sanding with 400-grit sandpaper will give it a professional, smooth finish.
• Protective Coating: Applying a clear matte or glossy spray will protect the red text from fading or chipping if the tool is handled frequently.
• Easy Mounting: The flat back of the model is ideal for double-sided adhesive tape or magnetic strips, allowing you to mount it on a wall, scale, or gym equipment for quick reference.

The Stone-to-KG Conversion Tool is a specialized 3D-printable reference model designed to provide a quick, physical readout for weight conversion. It serves as a tactile and visual aid for anyone who frequently works with both British Imperial (stone) and Metric (kilograms) units.

Purpose of the Tool

The primary purpose of this tool is to bridge the gap between two different systems of measurement. While digital converters are common, a physical 3D model offers several unique advantages:

• Instant Reference: It provides a permanent, "at-a-glance" conversion for the common benchmark of 2 stone (≈12.7 kg), which is often used as a baseline in fitness and health tracking.
• Educational Aid: It helps users develop an intuitive "feel" for the relationship between these units by providing a tangible representation of the data.
• Accessibility: The raised 3D text makes the conversion accessible to those who prefer tactile feedback or have visual impairments, as the numbers can be felt as well as seen.

This model is a practical example of functional 3D design, combining clear data visualization with physical utility.