Filandman holder for 2,3 KG rolls

thingiverse

Here's a design I came up with for a filament holder that should work well for most users. The main difference between this and your original design is the addition of some adjustable clamps to ensure a secure hold on the roll, regardless of its size. This way, you can use it with both smaller and larger rolls without any issues. I'd love to hear what you think!