Proto-pasta Polycarbonate-ABS Alloy is an incredibly tough material designed for strong, resilient parts that are also heat resistant. White in colour.
PC-ABS strikes an excellent balance between the extreme strength of PC and the easier processing of ABS, producing tough strong parts that are rigid and print cleanly.
Likes to be printed around 280C on an E3D-v6 in our experience for great layer bonding. Can be printed onto Kapton, ABS-Juice, or UHU Stic. You can even make a specialised ABS-PC juice by using Dichloromethane as a solvent for this material (be careful of the hazards associated with this solvent however).
One of our favourite materials for when you really need to crank up the strength.