NEDF WP4.2 FDM 3D Printers

Lot 1 - Describes a large format FDM 3D Printer that should be fully enclosed, have separate printing nozzles for the model build and support structure materials, and have an automatic change-over between filament spools to ensure continuous operation during a large build. Lot 2 - Describes a large format FDM 3D Printer that should be fully enclosed and have separate printing nozzles for the model build and support structure materials. Lot 2 has a smaller build volume than Lot 1 and uses 1 spool each of the model build and support structure materials.