Monthly Archives: March 2026

PC FR Filament for Engineering Parts: Strength with Fire Safety

If you’re looking at PC FR filament, you’re probably not trying to print decorative parts. You’re usually looking for something more serious: a material that keeps the core strengths of polycarbonate, but adds improved fire safety for parts used around electronics, enclosures, protective housings, and other engineering applications where heat and risk management matter. That is the point of flame-retardant polycarbonate. Kexcelled’s K9 PC FR is positioned exactly there, combining polycarbonate strength with a UL94 V-0 flame-retardant rating and a high-speed print profile aimed at functional engineering parts.

What Makes PC FR Different?

Standard polycarbonate is already valued in 3D printing for toughness, strength, and better heat resistance than everyday materials like PLA or PETG. The difference with PC FR is that it is formulated to slow burning and self-extinguish more effectively when ex

OBC 3D Filament Explained: What Olefin Block Copolymer Is, Why It’s Used, and Where It Fits

If you’re looking into OBC filament, you’re probably not hunting for a pretty shelf model material. You’re looking for something more functional: lightweight, durable, chemically resistant, and able to handle repeated flex without turning into a floppy rubber part. That is the space OBC sits in. OBC stands for olefin block copolymer, and modern OBC materials are built around a distinct block architecture designed to deliver a useful balance of recovery, flexibility and processability. In 3D printing terms, materials such as Kexcelled K8 OBC are positioned around low water absorption, flexibility, chemical resistance and low density.

What Makes OBC Different?

What makes OBC interesting is that it does not behave like a typical rigid filament, but it also does not need to behave like a very

K8™ PC Polycarbonate Filament Guide: Engineering-Grade Performance for Desktop 3D Printing

What Is Polycarbonate (PC) Filament?

Polycarbonate, commonly referred to as PC, is a high-performance engineering thermoplastic known for its strength, toughness, and heat resistance. It sits well above standard materials like PLA and PETG in terms of mechanical durability and temperature capability.

However, traditional polycarbonate can be challenging to print. Warping, poor layer bonding, and environmental sensitivity often make it unsuitable for many desktop systems. That’s where modern engineered PC blends like Kexcelled’s K8™ PC come in.

Why Step Up to PC?

If PLA is for rapid prototyping and PETG or ABS cover light functional use, polycarbonate is where you step into serious mechanical performance. PC offers significantly higher impact resistance, improved thermal stability, and stronger structural integrity.

With a recom