About this 3D model

Very basic Java program I made a while back to calculate the cost of a print given the cost and weight of a spool. Doesn't require install (if you have Java) and should work across systems. Update: Android app is out! https://play.google.com/store/apps/details?id=com.nz.ian.PrintCostCalculator or https://play.google.com/store/apps/details?id=com.nz.ian.PrintCostCalculatorPaid if you don't want ads. Input: Filament Type (PLA, ABS) Weight of Spool (kg) Cost of Spool ($) Length of print (mm) Output: Length of Spool (mm (m)) Cost per metre ($) Cost of Print ($) Let me know if you find any bugs. Feel Free to ask questions. Excuse the GUI design, haven't used Swing much. NOTE: The stl is just a conversion of an image to stl so I could upload the calculator, not really worth downloading unless you are curious. Also while I have done my best to ensure the accuracy I can't guarantee it as the density of the plastics does vary, again let me know if you find any problems. Enjoy!