The 3d Print Cost Calculator is a very basic App to calculate the cost of a print given the cost and weight of your material spool. Input: Filament Type (PLA, ABS, Taulman Nylon(618/645/Bridge) and Taulman t-glase). Filament Diameter. Weight of Spool (kg). Cost of Spool ($). Length of print (mm) (Can be found at the end of the Gcode file). Output: Length of Spool (m).