This is a simple and practical measuring tool that can accurately count the weight

This tool is specifically designed for a wire spool with a specification of 1 kilogram, containing 750 grams of wire, with an outer diameter of 200 millimeters and an inner diameter of 106 millimeters.

The printing direction depends to some extent on the accuracy and performance of the printer, but generally, I recommend placing the tool flat and printing with the digital side facing up.

The specifications of wire reels on the market vary greatly. Therefore, we hope that this tool can inspire everyone's creativity. According to the type of wire reel you are using, you can design and make your own exclusive version.

If you want to try making it yourself, you might as well refer to the following tips: Derive the relevant formula based on the cross-sectional area of the wire visible from the side of the reel, and rewrite it as a radial measurement formula starting from the outer edge of the reel and gradually decreasing inward.

The final calculation formula can be roughly expressed as: 100 - √[(8825 + 18347x)