MakerBot SR-30 Support Filament Spool for Method X 3D Printer (0.45kg/1lb)The MakerBot SR 30 Filament is a proprietary soluble support material developed by Stratasys to work seamlessly with ABS, ASA, and various other high temp materials. Because of this focused development, using SR 30 with these typically more challenging materials can yield exceptional results not possible with PVA which is very difficult to use with ABS. The SR 30 Support Material requires a specialized Ecoworks solution along with heat and agitation