Ender3v2

Hive13 Equipment
List of All Documented Equipment
Owner/Loaner: User:Heath
Hive13 Asset Tag: None
Make/Model: Ender 3 v2 (google)
Arrival Date: 08/05/2021
Does it work?: Yes
Certification Needed?: No
Contact: User:Heath
Floorplan: 1A

Overview

Read through this page in its entirety before operating the Ender3v2. This printer does not work like the Ultimaker 2. This printer is running Marlinand prints are started through a web interface called OctoPrint.

Before you print

Check out the resources provided in 3D Printing At Hive13, primarily the Learning Resources section.

If you plan to slice your model using Cura on the computer next to the printers ensure that you are using the Ender 3 profile for Cura.

• Launch Cura, and check in the top left corner. It should look like this:

It should look like this

• If it doesn't look like that, then click the dropdown:

It should look similar to this

• Then click Creality Ender-3. Then, the software should look similar to this. Notice the ENDER on the bed:

Operating Instructions

1. Slice your .stl file in a Slicer. See 3D Printing At Hive13 for more information, but Cura or PrusaSlicer are recommended with the default Creality Ender3v2 profile.
2. Go to 172.16.3.171 in a web browser
3. Log in with the following credentials username: Hive13 and password: 3dprinting@Hive13
4. Ensure that the printer is connected to the printer /tmp/printer
5. Drag and drop the gcode file that your Slicer output to the left side of the web browser.
6. Click the printer icon on your new file

• DO NOT PUT HAIRSPRAY ON THE BED!

What do I do if I screw something up?

First, that's okay! 3D printing is a real P.I.T.A. But, failing, learning, and trying again is just a part of the process.

Second, abort your print on OctoPrint by clicking the Cancel button underneath the progress bar and then follow the build removal directions. If you're not sure why it failed ask on Slack and/or the mailing list, or DM User:Heath

Not currently at the hive? Ask our little robot overlord on Slack (Octoslack, see below) to either pause, or stop your print

If the nozzle clogs, let us know in Slack and/or the mailing list, or DM User:Heath

Build Removal

Allowing the print bed to cool completely. When you go to the Temperature tab on OctoPrint, the both temperature should read around 25-26 degress. This should make removing prints easier. If they are still difficult to remove then use the largest pair of channel locks you can find and grip the print firmly. A simple twist should pop it off in one piece. You can also try heating the build plate from the back side with a heat gun.

We DO NOT recommend the use of scrapping the bed plate to remove your print, but if you must... always scrape away from you. Prints tend to come off suddenly and with little warning. If you don't follow these instructions your print will become exponentially more expensive, as it will involve a trip to the emergency room and stitches.

Changing Filament

To remove filament

1. Use the Octoprint UI or the LCD controls on the Ender 3 to set the hot end temperature to the filaments melt point (Eg: ~200 C for PLA)
2. Wait for it to come up to temperature
3. On the extruder motor, press the spring loaded lever to release tension on the filament, and gently pull it out.

To insert filament

1. Confirm setpoint for the hotend matches the melt temperature for the filament I am about to insert
2. Trim the end of the filament to a point to make it easier to thread into the extruder
3. On the extruder motor, press the spring loaded lever to release tension on the filament, gently feed the filament into the bowden tube through the extruder. Continue to feed filament until I start to see plastic coming out of the hot end.
4. In the Octoprint UI or via the LCD controls, instruct the Ender3 to extrude 30-40 mm of filament

Material Compatibility

Again, please refer to 3D Printing At Hive13.

The Ender 3 v2 uses 1.75mm nominal diameter filament. In it's current form (as of 08/05/2021) the Ender 3 v2 CANNOT print anything other than PLA. You can attempt to use any PLA that you desire, but Microcenter does carry a good amount of Inland PLA which works well.

Other good brands of filament include (but are not limited to):

• Atomic Filament
• Proto-Pasta

Octoslack

Octoslack helps us keep an eye on prints that run after you leave, simply join the slack channel “print-status” and ask octoslack for the status

our friendly little robot overlord will also alert at the end of a print, and allows for a few basic commands. just remember, these will only work in the print-status channel.

@octoslack status

@octoslack stop

@octoslack pause

@octoslack resume

Troubleshooting

Error reported by printer: Your printer's firmware reported an error: Heater extruder not heating at expected rate.

• Ensure that both the Printer and the Pi are running (if you can reach the OctoPrint webpage, the Pi is running)
• Go to terminal tab in OctoPrint.
• In text box under terminal (with send button on right side) type in FIRMWARE_RESTART and press enter.
• It should be a quick process, but once there is an output that says something like "Klipper: OK" you should be good to go.