Why would I choose a bristle mix filament over a single-material filament for a paint brush?

A bristle mix (such as our PET/PBT blend) is designed to offer the "best of both worlds." It combines the stiffness and scratch-resistant qualities of one polymer with the flexibility and paint-holding capacity of another. This creates a versatile brush filament that is stiff enough to handle heavier paints and provide good "scrub" ability, yet flexible enough for smooth application, making it an excellent all-purpose choice.