Standard PLA+, Castle Gray, 1.75mmWe introduced Castle Gray Standard PLA+ to 3D print stone and masonry with detailed shadows. It is darker than Industrial Gray and lighter than Charcoal Gray. Standard PLA+ is a basic, entry level PLA filament. It's available in a broad color selection and uses only virgin NatureWorks Ingeo 4043d PLA resin. No fillers or stretchers means a more predictable 3D printing experience. Because we don't use fillers, the ideal print temp might be 5 10C higher