Polymaker PC-ABS filament 1 kg, 1.75 mm

A good starting point is 250–270°C for the nozzle and 90–105°C for the build plate. Polymaker recommends a heated chamber at around 90–105°C, a disabled part cooling fan and a starting speed of around 30–50 mm/s. An all-metal hotend capable of operating reliably at a minimum of 250°C is required.

Yes. An actively heated chamber is a core requirement for Polymaker PC-ABS, rather than simply a convenience. Polymaker specifies a minimum chamber temperature of around 90°C. Insufficient heat substantially increases the risk of warping, cracking and poor layer adhesion. These problems are also commonly reported by users printing PC-ABS in chambers at only around 40–60°C.

The most important factor is slow, even cooling. Fully preheat the chamber, disable part cooling, use a hot build plate and avoid draughts or opening the printer during printing. A brim can help with large parts, but it cannot compensate for an insufficiently warm chamber.

PC-ABS absorbs moisture and should be stored in a dry box or a tightly sealed container with desiccant. If the material has absorbed moisture, Polymaker recommends drying at 75°C for 6 hours. Damp filament reduces surface quality, extrusion stability and layer adhesion.

For standard printing with Polymaker PC-ABS, the part cooling fan should be disabled. Excessively rapid cooling increases internal stresses and can cause warping or layer separation. A stable, high temperature around the whole part is more important for this material than aggressive cooling.

Yes, particularly for functional parts exposed to loads. Polymaker specifies annealing at around 90°C for 2 hours, followed by gradual cooling to room temperature. This reduces residual stresses and the risk of cracking along layer boundaries.

Its glass transition temperature is around 109°C. The heat deflection temperature (HDT) is approximately 106°C at 1.8 MPa and 112°C at 0.45 MPa, while the Vicat softening temperature is around 135°C. This makes it considerably more suitable for functional parts near heat sources than standard low-temperature filaments.