This application can visualize Gcodes and simulate a real 3D print. GCode Simulator recognizes the print speeds and can simulate the print in realtime, but you can also speedup the prints (fast forward,slow motion). Each layer is painted in a different color to see how a layer overlaps with the layer below. GCodeSimulator Home page: http://3dprintapps.de/ Video of GCodeSimulator in action: http://www.youtube.com/watch?v=i1SY2N21EDQ GCodeSimulator let you to check how your print should turn out, making it easier to spot errors and fix them instead of wasting filament. If the print object looks ok you can directly send it over Wifi to GCodePrintr (Android) to print it. GCodePrintr - 3D Printing for ANDROID available Allows real 3D printing from an Android device https://play.google.com/store/apps/details?id=de.dietzm.gcodesimulator In addition GCodeSimulator analyses the Gcode file and prints additional information like: It calculates various print details like -print time -used filament -yx move distance -print object dimension -average print speeds -number of layers -layer details -speed distribution / Acceleration -weight and price of the printed object -much more ... It also allows to debug your gcode by stepping through it line by line and show the results. (debug mode) Developed for my reprap printer but works with other printers (e.g. makerbot, ultimaker,...) as well, tested with Silc3r and skeinforge gcodes. Download the latest Version V130 Add GCode Simulator as post-processing script in Slic3r !! GCode Simulator for ANDROID available Allows real 3D printing from an Android device (not just simulation) https://play.google.com/store/apps/details?id=de.dietzm.gcodesimulator Update V1.32 Fix for G02/G03 gcodes Fit to page zoom more fixes Update V1.30 Improved behavior when jumping between layers Support for G00,G01,G02 gcodes Thumbnail support - can be integrated with Nautilus Update V1.29 New Snapshot Image function to create a snapshot of the model and store it as jpg. Helps to get an overview and categorize your existing gcodes. Round print bed support Antialiasing Many fixes Update V1.27 Option to autostart print when sending gcode to GcodePrintr (>=V1.67) Option to autosave model when sending gcode to GcodePrintr (>=V1.67) Option to configure offset for dual extruder Many bug fixes Update V1.25 Added limited support for BfB style gcodes Added "Jump to Layer" option New button bar & banner Fixed nozzle offset Update V1.22 Configurable bed size Gray and Autumn Themes Update V1.21 New Button bar Layout changed New print panel (not working yet) Update V1.18 Fix wrong label painting Remember Network IP Remember last file path Update V1.17 Many performance improvments GCode Parser improvements Paint Extruder on frotn view Workaround for MacOS load bug Update V1.16 Fixed problem when parsing gcodes with multiple whitespaces UPDATE V1.15 Fixed NullPointerException with G4 gcode UPDATE V1.14 Fixed Network Send Feature (broken in V1.12) Improved load time UPDATE V1.12 Add makeware specific extrusion code ( A&B instead of E) Removed debug message which slowed down the load Fixed side view, slicer comments view, 1st layer temp Removed experimental edit mode (speek up if you need it!) UPDATE V1.11 Add makeware specific extrusion code ( A instead of E) Fixed boundary calculation (start position was ignored) UPDATE V1.10 Improved performance Significantly reduced memory usage UPDATE V1.07 -New Network Send (Remote Print) Feature - allows you to send the Gcode to an Android device running Gcode Simulator V1.05 Beta. -Added new menu items for the functions added in V1.02 -Fixed Z-lift Bug (layers were reordered by Z-pos) UPDATE V1.03-V1.06 Various updates to the Android Beta Version UPDATE V1.02 Fixed some ReplicatorG Bugs Fixed some "Invalid Gcode" errors by adding support for addtl. Gcodes (M204,M70,G161,...) Show current Gcode line when in pause (debug mode) Added step by step execution (debug mode). Use space/backspace to step through the gcodes during pause Added fast forward/rewind (skip 50 gcodes). Use space/backspace during run. Added increase/decrease of speedup in larger steps (10x). Use / (Up) * (Down) UPDATE V0.99 The current location of the nozzle is painted to improve usability. Replaced blue with a lighter pink to improve readability. Click on speedup label box will toggles pause Scrollwheel for speedup is only active when mouse is over printbed or labels UPDATE V0.98 Support for center format G2/G3 Gcodes (Arc) - Radius format not supported yet UPDATE V0.97 More reslilient against errors and unsupported gcodes UPDATE V0.96 Display extrusion rate (mm/min) in real time Display pause status in status bar Display of Fan output changed (III=Full Speed, II=Medium, I=Slow, ""=off) Rendering bug (Grey spots) fixed UPDATE V0.95 Based on new GCodeInfo Experimental Edit Mode added Optimize lavel repaint Fixed bugs with details toggle and temperature UPDATE V0.93 Some performance improvements. Window Icon added. Automatic Zoom on Window resize. Filedialog uses current user path. Fixed some multi-threading bugs. UPDATE V0.92 Added Menubar Show model details by default. Fixed double buffering bug for MAC OS. Some Performance improvements UPDATE V0.91 Show current speed and remaining print time. Fixed double buffering bug. UPDATE V0.90 Render Front and Side View Experimental Printing support (requires RXTXcomm.jar and /dev/ttyUSB0) Added S Key-Shortcut for "Start Print" Some Bug Fixes UPDATE V0.81 Added Mouse Support Mousewheel = Speed up/down ALT+Mousewheel = Zoom in/out Left Button on Bed = Next Layer ALT+Left Button on Bed = Previous Layer Right Button = Show Model Details Left Button on Details = Toggle Model Details Middle Button = Show Help Show percentage when loading gcode files Start with default gcode (GCode Simulator Key Chain) , press f to load file. Fixed bugs. UPDATE V0.80 Much smoother painting by splitting longer lines into multiple draws Added nice looking labels with boxes for current infos (instead of plain test string) Toggle modeldetails can now page through multiple pages of layer details Unknown keys open about/help dialog. Fixed acceleration (ignore acceleration for speed distribution), use acceleration for paint and layer time. Show separate time values (with and without acceleration) UPDATE V0.71 Non-disruptive zoom (no restart) implemented Jump to previous layer added. "Next Layer" option completes the layer painting (not skips it) Paint grid on print bed. UPDATE V0.69 Show new GCodeInfo modeldetails (Material,Weight,Price,.. See GcodeInfo for details.) Fixed some issues with Skeinforge comments and average calulations. UPDATE V0.68 Support for Java Version 1.6 (MacOS) UPDATE V0.67 Added option (t) to toggle details (show more model & layer details similar to Gcodeinfo) Added option (f) to open another gcode file. UPDATE V0.65 Handle gcode files with Z-Lifts and negative coordinates (auto center on bed). Show details of the printed model (e.g. overall print time, size, layers,..) Start the java program by calling on the command line (Java 1.6.x required) java -jar GCodeSimulator.jar Or Open with java from explorer or your favorite file browser.