3D printing, particularly FDM 3D printing, involves a lot of heat. Heated print head, heated build chamber, heated build platform - it's all necessary to melt plastic filament and ensure that it stays soft enough to adhere to the build plate and to each subsequent layer before hardening. But Thermwood Corporation, which introduced the Large Scale Additive Manufacturing (LSAM) hybrid 3D printer and CNC machine last year, is taking a different approach. Thermwood's new "Universal" print head for LSAM machines is the only heat source involved in the printing process. Read more at 3DPrint.com: http://3dprint.com/175607/universal-print-head-lsam/