General Info

3D Printing

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How to Print on the Taz 3

1.  Turn on the printer using the switch on the left and watch the blue screen until it says: “Mendel ready.”

2.  You need to have a model picked out and ready to print on the Mac to the right of the printer.  The file must be in a .stl format.  If you do not have a .stl previously picked out, you can find models on thingiverse.com.

Once you find something you want to print, download all files.

3.  Go to downloads and find your download file or pull it up.

4.  Open the blue Cura (the icon above).  Cura helps turn the .stlfile into a G-code which the printer can understand.  Once Cura is open, drag the .stl onto the green checkered print bed model on the computer.  The green checkered bed model represents the print on the 3D printer.

5.  Once your object is shown on Cura, look at the left side of the screen where the settings are.

a.  Your layer height should be .2mm.  The smaller the height, the higher the quality the model will be, but the longer it will take to print.  The larger the layer height, the lower the quality print will be, but it will take less time to print.

b.  Check your plastic you have chosen for the PLA temperature for which it best prints.  Each material will have a different temperature label.

c.  Enter a number in that range to the printing temperature on Cura.  We ONLY use PLA plastics because it is non-toxic.  The base temperature at all times is 60 degrees.

d.  Make sure your G-code saves to a place on the computer where it is easy to find.

6. Go to your browser and then to ocotoprint.cc.oberlin.edu (this connects the computer to the printer).

7. Log in:

Username: octet

Password: EdTech123

8.  Create a new folder on the bottom right side of the screen with your name.

a. Double-click to open the folder.

b.  Drag G-code saved from Cura into the folder.  An option to save locally might pop up; click that.

c.  Go to the top of the page and click connect.

d.  Go back to your name folder and click on the file/folder icon under your name (brings your file up to operation).  This allows you to see how much it will cost to print your object and how long it will take.

9. The printer will begin to print when the temperature is correct.  Keep an eye on the temperature graph and percent done.

10. If you are the first person to use the printer (you turned it on), then wait until the printer begins the print and go back to the computer and press cancel.  You have to do this because the software has a bug that prints the first attempt incorrectly.

a.  Do not touch where the plastic released.  It is hot; you will be burned.

b.  After hitting cancel, go to control on the screen and click “up unde zr” two to three times.  Click motors off (enabling you to move the plastic spout by hand).  Slide bed out and clean with a razor and scrape off the plastic (use caution).  Make sure the bed is as flat as it can be.  Rub the glue in the area where the printer had begun the initial time.

c. Slide back the print bed.

11.  Now you can re-print.  Go back to your name folder and click on the print icon under your name (brings your file up to operation).  This allows you to see how much it will cost to print your object and how long it will take.

a. If the print does not turn out how you would like, the slicer settings are not correct.

12.  When finished printing, pull out the print bed and use the razor to remove your model.

To Change the Filament on the 3D Printer:

1. Turn on the printer on the left side and watch the blue screen until it says: “Mendel ready.”

2. Go to your browser and go to octoprint.cc.oberlin.edu.

3. Log in:

a. Username: octet

b. Password: EdTech123123

4. Loosen two screws on the left on the filament tensioner.

5. Lift the screw up and the blue object to the left.

6. Go to the temperature section on the screen and go to the blue dropdown menu, click set PLA (180 degrees).

7. Look at the graph/blue screen on the top left of the 3D printer and look for when the filament tensioner is 180 degrees.

8. Double check the screws; make sure they are unscrewed.  The blue plastic piece should tilt away from the purple.

9. Pull the current filament out and take the new piece up around the black outside of the 3D printer and insert the new filament into where the old one was.

a.  This can be tricky to insert in the machine; don’t be afraid to push.

10. Once the plastic is in its original step, set the blue piece in the place and re-screw the two screws back in place.  You are now ready to print.