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Operating the 3D Printer

Needed Materials:

-Makerbot installed on a computer or system.

-A file of what you would like to print. (Preferably an STL file.)

-A USB storage device. (Preferably formatted to FAT32)

-A lot of time.

Get the Model:

Specifically, to begin the process, you should attempt to get an STL file. Other forms of 3D model files may work, but an STL works best. You should also try to make sure the model itself is set to the correct sizes. The easiest way to do this or transfer from OBJ or another file type to STL is to open your ile in a 3D modeling software, such as Blender or Maya, confirm its size and details, then to export it as an STL from there. Once you have the correct file type and you have ensured you have Makerbot downloaded and functional, you are free to proceed. Do not worry about model size yet, as Makerbot has a scaling feature, but you do need to be sure proportions and details are correct.

File Preparation:

To prepare the file in Makerbot, once you are signed in, simply click the icon that looks like a folder in the upper left corner. Then hit the plus icon and import your STL or other model file. Once the model is loaded, click on the icon on the left that appears to be a box inside a box. This is the scaling option, and allows you to make your object the correct size. Then, going through the options will allow you to orient the print, arrange the print plate, and prepare the print. Once you have everything placed then choose the appropriate options in the settings, such as if it should have supports or not.

 Once you have all the seeing in order, click on the icon that looks like a clock with a play icon to prepare the print. After that, export the makerbot file with the export button and save your work. To do so, you may need to select the kind of printer to be used if you haven’t already. The SCIL labs model of printer is a Replicator+, and you’ll need to select it as an offline or manual option. Finally, transfer the makerbot file, not the print file, to your USB storage device, and you are ready to use the 3D printer.

Printer Operation:

 Follow these instructions as closely as possible, and do not mess with other settings. Although improving the extruder speed or messing with the fan may sound like a way to speed up the process, it will more than likely result in your print turning into a blob or warping horribly. If you follow these instructions and have issues, or wish to alter something such as the color of your print, please find someone trained with the printer to help you.


  1. Clear the plate.
    1. There may be debris or plastic from previous prints left on the printing plate. It is recommended before printing to make sure this plate is clear.
  2. Turn on the printer.
    1. The power button is located on the back left of the printer. If there are no lights on at all, find and press this button. If there are lights on but the screen is not on, just click the knob to bring it out of sleep mode. Be patient, the printer may be slow starting up or coming out of sleep mode. Once the screen is on, proceed.
  3. Plug in the USB Storage.
    1. The slot is located to the right of the selection knob. Make sure the drive is plugged in and wait a moment before proceeding to give the printer a moment to register it was plugged in.
  4. Select Print.
    1. It should be the upper-left most icon.
  5. Select from USB storage.
    1. It should be the first of the two options.
    2. Be patient, it takes the printer a moment here to retrieve the files from your storage. Proceed when the screen changes.
  6. Select your print.
    1. Navigate to your print through your files and select the file you would like to print. This should give you a preview of your print and a time estimate.
  7. Select print.
    1. Select the print option and the machine will automatically calibrate itself and begin printing.
  8. Wait.
    1. It is not uncommon for prints to take longer than an hour to print. Please be patient or find something else to occupy your time.

Clean-up:

 Once you have printed your file, you may need to clean it up some. The “Raft” and supports on your print can be removed by hand, though tools are available. You may use the maker space in order to fully clean up your project. I would recommend using files as needed and many prefer to use the exacto knives and other tools present as well. You may need to find an SCIL member or have access to the SCIL key in order to access many of the tools. Be careful when cleaning up your model, the plastic can be brittle and break easily if you handle your model roughly, especially if it has thinner parts. Once you are finished, please remember to clean up the area before you leave. Thank you.

Special Notes/Advice:

  • Currently there is an issue with larger prints warping. It is recommended to keep your prints width and depth to approximately 5 cm or lower. Verticality or height has no effect on the warping and you are free to print tall as long as it is within the height limit.
  • The variance of the plastic is about 1 mm. Keep this in mind when making your print, as this means any part may shift up to a mm or the model overall may shrink a mm once you have finished printing.
  • For those looking to reduce the amount of time on a print, or to reduce the amount of support bridging on a print, you can safely lower support density to 5% in the settings, and raise the support angle to 80%, to do so.
  • Any part that hangs about half a cm or more from the main print likely requires support.
  • It is recommended when preparing the print to set the widest and flattest part of the print on the bottom. The printer tends to dislike “legs” and things standing on them.
  • If your print will take more than 4 hours, it is recommended to have it print overnight as a courtesy to others. If a print will take more than 16 hours, it is then recommended to print it over the weekend instead.
  • Remember, the plastic shrinks when cooled. This size difference can range from .2 mm to .8 mm, so keep that in mind when designing parts.

Troubleshooting:

-If your USB storage device cannot be recognized, then it may be formatted in a way the printer cannot read. Try getting a new drive or reformatting yours. FAT32 seems to be the smoothest functioning storage format.

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