Polycarbonate arrives in 3D printing as an engineering filament that clearly surpasses ABS and PETG in mechanical, thermal, and impact resistance. It is not a material for beginners: its processing demands high extrusion temperatures, a heated bed, and an enclosed chamber to prevent warping and delamination. For the professional, this means functional end-use parts, but with rigorous environmental control.
Critical Parameters: Flow, Cooling, and Enclosed Chamber 🔥
Mastering PC requires precisely adjusting the flow to avoid stringing or underextrusion, and managing minimal or no cooling during the first layers. The bed temperature should be around 110-130 degrees, with adhesives such as polyimide tape or PC sheets. Without an enclosed chamber, the thermal differential causes warping and interlayer cracking. Print speed is reduced to ensure adhesion, and pre-drying the filament is mandatory: moisture ruins any attempt at a strong part.
When Your Printer Sweats More Than You Do in August 😅
If you thought ABS was finicky, polycarbonate will teach you humility. You need a chamber that looks like a pizza oven and the patience of a monk so that the first layer doesn't decide to peel off on a whim. And when you finally achieve a perfect part, you realize you've spent three hours calibrating and one printing. But hey, at least the result holds up better than your self-esteem after the eighth failed attempt.