Small stuck pieces of filament can easily be cleaned by this tool from smooth sheet steel.
Special handy for the residue of PETG supports that hold very well.
Designed for this blades: https://www.stanleytools.com/products/hand-tools/knives-blades/replacement-blades/5-pk-1992-heavyduty-utility-blades/11-921
60 mm x 19 mm and 0.6 mm thick
The author marked this model as their own original creation.