Multi-purpose and multi-material 3D printers are becoming increasingly popular. LulzBot was an early adopter of multi-material printing capability, and they now offer seven different toolheads with the latest being the FlexyDually Tool Head v2. An upgrade on the original FlexyDually, the v2 allows users to print in both rigid and flexible materials in one print job. Read more at 3DPrint.com: https://3dprint.com/129465/flexydually-tool-head-v2/