Filament ruler
thingiverse
Filament ruler is tailored specifically for my spool, which consists of 3D prints made from PLA 1.75mm filament weighing 1KG. The diameter of the outer edge is 199mm, while the inner diameter measures 80mm and the width is 66.5mm. To simplify the measurement process and enhance packing efficiency, I assume a ratio of 75%. By using the distance between the core and the spool's edge instead of measuring D_core directly, I can visualize results with a filament ruler. A circle symbol represents 100m of filament length, while a square symbol denotes 25m. Type 2 applies to another spool made from FLMT PLA 1.75mm filament weighing 1KG. The outer diameter is 200mm, the inner diameter measures 80mm, and the width is 60mm. For other types of spools, you can input these parameters into an xlsx file to obtain the necessary sizes.
With this file you will be able to print Filament ruler with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Filament ruler.