Setting up SimplyPrint on RailCore Labs / Project R3D RailCore II 300ZL/300ZLT: Co Print ChromaPad method

Co Print ChromaPad setup for this printer. Follow the steps to connect your RailCore Labs / Project R3D RailCore II 300ZL/300ZLT 3D printer to SimplyPrint.

RailCore Labs / Project R3D RailCore II 300ZL/300ZLT image
Back to RailCore II 300ZL/300ZLT
  • 1 Readying ChromaPad
  • 2 Mainsail setup

Add [simplyprint] to the moonraker.conf config file

  1. Go to the "Machine" tab
  2. Under "Config Files", click on the moonraker.conf file
    • NOTE: depending on your printer, the Moonraker config file may go by a different name. Common names are moonraker.conf, user.moonraker.conf, moonraker.generated.config, or a custom filename. If moonraker.conf isn't present, edit whichever file Moonraker is actually loading on your printer.
  3. Add [simplyprint] to the bottom of the file (with an empty line above it)
  4. Click the "Save & restart" button
moonraker.conf config file Edit moonraker.conf

Lastly; link your printer to SimplyPrint

After saving and restarting, your printer should appear automatically in SimplyPrint!

  1. Go to SimplyPrint.io and click Add Printer
  2. Check Pending Printers - your printer will likely appear there automatically
  3. Click to add it and you're done!

If your printer doesn't appear in Pending Printers:

This can happen if you're not on the same network as your printer (different outgoing IP). In this case, use the setup code:

  1. In the "Announcements" bell (🔔) in the top bar, find the "SimplyPrint Setup Request" message
SimplyPrint setup code
  1. Copy the setup code and paste it in SimplyPrint under Add Printer

Still having trouble? See our guide: Printer in setup isn't detected / can't find setup code.

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Thousands complete this setup every week. Follow each step carefully - most issues come from skipping ahead.

Why some setups are tricky: Some manufacturers lock down their printers, requiring workarounds like custom firmware. If hardware is listed as required, there's no shortcut.

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That's it! You're all set

You're now ready to connect your printer and start using SimplyPrint.

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