Your first print

Leveling the Build Plate:

The leveling procedure is very important, but also very straight forward! You’ll need a single sheet of printer paper.

  1. Turn on the power to the KNP3D. Place the sheet of paper on the build plate.
  2. On the control panel, select Utilities and then select Level Build Plate. The current temperatures of the extruders and platform (build plate) will appear.
  3. The extruder head will first move over to the right side and the build plate will rise up.  Then the extruder will move to the center of the build plate.
  4. You can now manually move the extruder head in different positions over the build plate by sliding it left / right or pulling it forward / pushing it backward.

Since this is a manual process, you can move the extruder head to as many positions as you would like. However, for this calibration, you will be moving the head to three different positions: over each of the three adjustment knobs (located below the build plate). In each position you will adjust the height so that it just touches the piece of paper.

  1. To begin, move the extruder head above the front right knob.
  2. If you cannot slide the paper between the extruder and the build plate, you have it too high and need to turn the knob to the left. If you can slip the paper between the build extruder and build plate, with room to move the paper up and down, you have the build plate too low so turn the knob to the right. Remember:

Turn the knob to the right to raise the build plate (Right = Raise)

Turn the knob to the left to lower the build plate (Left = Lower)

  1. Once you have the front right knob adjusted, move the extruder head to the front left and repeat Steps (5) and (6). You want to avoid having the nozzle dig into the plate so if, while moving, the paper suddenly has a lot of resistance, stop and lower the plate at that point.
  2. After you have the front left knob adjusted, move to the center back. Repeat Steps (5) and (6).
  3. Upon adjusting at all three locations, repeat Steps (5) – (9) and adjust again. It usually takes three or four repeats at each location to get the leveling just right.
  4. If you’re satisfied that the plate is level and the paper will slide with just a little resistance in all three locations, press K on the control panel. Note that this calibration procedure can be repeated any time you feel a need to check it.


Loading Filament:

  • Before loading the filament, be sure to disconnect the guide tube from the top of the extruder by pulling the plastic tubing out of the hole in the acrylic plate.
  • Feed the filament into the bottom of the guide tube until it comes out the other end. If you plan to use only one filament, the right side is considered the default. Remember that the spools should be loaded so that the filament feeds straight up into the guide tubes:

Filament Feed

  • Extend the filament several more inches so that you can easily hold it between your thumb and index finger. Use scissors to cut off and discard about one inch of the end.
  • Next, on the control panel, go to: Utilities > Filament Loading > Load Right. 
  • The extruder head will now begin heating up to 230°C. When the extruder reaches the preset temperature, the KNP3D will play a little tune, prompting you to load the filament.
  • Press down on the small extruder lever on the right side of the right extruder and feed the filament firmly down into the hole on the top.

Extruder Arm

  • Once in, let go of the extruder lever and the filament will begin to slowly feed into the extruder. Place the end of the guide tube into the hole in the acrylic plate. After a few seconds, you’ll see filament streaming out of the nozzle.
  • You will most likely see a different color for the first few seconds. Not to worry. Every machine is tested with a randomly selected colored filament before it’s packaged for shipment. Once the proper color filament starts streaming out of the nozzle, allow it to continue feeding through for about 5 – 8 seconds.
  • Press K to exit. Turn off the KNP3D.  After a minute or so, you can remove and discard the extruded filament.
  • If, at any time during the loading process you need to cancel, press the left button on the control panel and the option to cancel will appear.

 Load Profiles into Slic3r

  • The first time you open Slic3r, the Configuration Assistant window will also open. Click on Cancel as you will need to switch to Expert mode.
  • Go to File > Preferences (on a Mac, go to Slic3r > Preferences) and select Expert in the drop down menu and mark all three boxes. Then click on OK:


  • You will need to restart Slic3r so that the menus will switch to the Expert
  • Once Slic3r has reopened, go to File > Load Config Bundle (note: not the top menu item, but the third one in the menu). Browse to locate the “KNP3D Profiles” file you downloaded. Select it and click on Open.


Print time!

You’re now ready to make your first print. We’ve created a simple 3D key fob to be used:

Download Key Fob 

  • Download this .stl file and then open up Slic3r.
  • On the Plater tab (top left), click the Add buttonBrowse and locate the downloaded .stl file and click on Open. The file name will appear under Name:


  • On the right side, the profiles to be used in this print will need to be selected. Click on each drop-down arrow and select the Profiles  as shown here:


  • Note, on the right side of this window, that the upper profile under Filament is for the right extruder and the lower profile is for the left extruder. There will be situations in which you will need to select a profile for that second extruder if using it for your print.
  • Click the Export G-code button over on the right side. A window will open and you will be able to now click on Save. Note where the file will be saved and change the location, if desired.
  • Next, we need to convert the gcode file to x3g. Open the KNP3D converter program and click the Browse button to the right of Input File. Locate and choose gcode and click Open.
  • Click the Browse button to the right of Output File.  Here you can save the file directly to your SD card, or you can save it to a different directory and copy to your SD card later. For now, save to the SD card and click on Save.
  • Now click on Convert. Once complete, a window will open letting you know the file has been successfully converted:



  • Turn on the KNP3D.
  • Insert the SD card into the 3D printer. The SD card slot is found on the top right corner of the KNP3D and the card is inserted with the label facing forward:


  • From the KNP3D control panel, select Print from SD and then select thex3g file.
  • Your KNP3D should begin its first print after the build plate and extruder reach the preset temperature.
  • Note that a skirt is always printed first to ensure the filament is flowing smoothly. If, after two passes, there is no filament or the filament is not sticking to the build plate, cancel the print by pressing the left key on the control panel. Repeat the Loading Filament process.
  • When the printing is complete, the extruder will return to the back right corner. Allow to cool for a few minutes.
  • To remove  the model, use a sharp flat tool, such as a thin metal spatula or an artist’s palette knife. Gently slip the tool under the outer edge of the model in several different spots.  Then slip it under again and twist. The model should pop off (separate) easily from the plate.

That’s it!  The KNP3D User Manual contains much more information on the many functions available to maximize your KNP3D experience! Be sure to check it out and watch for updates and videos to be available.  We also have a User Forum where you can ask questions and share your experiences.

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