FDM material
PC (polycarbonate) filament — performance and limits
Polycarbonate targets stiff, heat-capable functional parts — far beyond typical PETG. It is also one of the most demanding mainstream engineering filaments: high temperatures, moisture-sensitive spools, and warping risk on open printers.
- Very high stiffness and strong heat performance vs common filaments
- Optical clarity possible on some grades (not “glass”)
- Technical printing — drying, enclosure, tuning
- For mechanical and hot-environment parts when the machine can follow
Performance at a glance — PC
1–5 scale. Cost: higher stars = more budget-friendly.
What is PC in FDM?
PC is an engineering thermoplastic valued for stiffness and elevated service temperature versus ABS or PETG. In filament form it demands hot hardware, controlled cooling, and usually dry filament for reliable layers.
Advantages
- High rigidity for brackets, frames, and loaded structures — when printed well.
- Heat performance many steps above PLA/PETG for demanding environments.
- Clear grades can look “glassy” — still layer lines and process dependent.
Limits
- Warping and adhesion challenges on large flat prints.
- Moisture ruins extrusion — plan drying.
- Not a drop-in on average desktop printers.
Typical use cases
Fits
When PC fits
- Rigid mechanical prototypes
- Hot ambient parts (validated)
- Industrial trials on capable printers
Poor fit
When to skip
- ABS or PETG already enough
- No heated chamber / marginal hardware
PC vs other materials
Comparison
PC vs ABS
PC can push stiffness and heat further; ABS is often easier to industrialize in many shops.
Comparison
PC vs PETG
PETG is the everyday workhorse. PC is for when PETG is thermally or mechanically short.
Comparison
PC vs PA12
PA12 shines on toughness and wear; PC on rigidity — pick from load case and environment.
When to avoid PC
- PETG or ABS already satisfies the requirement.
- You cannot dry filament or stabilize the build chamber.
Still unsure?
Matdecision walks through your need and points you toward a filament that fits your project.
Launch the Matdecision material selectorReal projects need more than a filament name
Design and process matter as much as polymer choice.
FAQ — PC
Is PC hard to print?
Yes — among the more demanding FDM materials: heat, warping, and drying matter.
Does PC resist high temperature?
Generally much better than PLA/PETG; validate with your grade and real part temperature.
Is PC transparent?
Some clear grades exist; printed clarity is never optical-glass quality — expect translucent / glossy effects.
Must I dry PC?
Usually yes — moisture causes foaming and weak layers.