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Begin by powering off and unplugging your R1 3D Printer. Unplug the USB cable. Remove your filament holder.
  • Begin by powering off and unplugging your R1 3D Printer.

  • Unplug the USB cable.

  • Remove your filament holder.

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Carefully place your R1 on its side. (Please note the orientation of  your machine). Position the R1 so the bottom is facing you. (Please ensure your machine is oriented in the same direction as photographed)
  • Carefully place your R1 on its side. (Please note the orientation of your machine).

  • Position the R1 so the bottom is facing you. (Please ensure your machine is oriented in the same direction as photographed)

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Unscrew the six screws securing the bottom plate to your ROBO 3D Printer. Carefully pull back the bottom case, without ripping the attached cable. Unplug the cooling fan from the electronics board.
  • Unscrew the six screws securing the bottom plate to your ROBO 3D Printer.

  • Carefully pull back the bottom case, without ripping the attached cable.

  • Unplug the cooling fan from the electronics board.

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Rotate your R1 so it is facing you.
  • Rotate your R1 so it is facing you.

  • Slowly slide your X-Axis carriage to the top of your printer.

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Unscrew the Z-Axis end stops. Ensure you do this both to the left and right end stops. (Note: In picture #2 the arrow is referencing the right end stop) Ensure you do this both to the left and right end stops. (Note: In picture #2 the arrow is referencing the right end stop)
  • Unscrew the Z-Axis end stops.

  • Ensure you do this both to the left and right end stops. (Note: In picture #2 the arrow is referencing the right end stop)

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Now, on the underside of your ROBO R1, carefully cut the zip tie holding all the wires together. Locate the Z Axis stepper motor wires on your electronics board.
  • Now, on the underside of your ROBO R1, carefully cut the zip tie holding all the wires together.

  • Locate the Z Axis stepper motor wires on your electronics board.

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Unplug the left stepper motor cable which should be connected to the motor closest to the electronics board Unravel the pigtail (spiral wrap) that leads to the far z motor. Unravel the pigtail (spiral wrap) that leads to the far z motor.
  • Unplug the left stepper motor cable which should be connected to the motor closest to the electronics board

  • Unravel the pigtail (spiral wrap) that leads to the far z motor.

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Unplug the other z motor from your electronics board. (Right side) Unplug the other z motor from your electronics board. (Right side)
  • Unplug the other z motor from your electronics board. (Right side)

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Loosen the screws on both z end stop brackets Slide the z end stop bracket off the hex nut.
  • Loosen the screws on both z end stop brackets

  • Slide the z end stop bracket off the hex nut.

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Unscrew the four screws holding each z motor in place. Please hold the motor from the underside of the printer while removing the screws- this will stop the motor from falling once all screws are removed.
  • Unscrew the four screws holding each z motor in place.

  • Please hold the motor from the underside of the printer while removing the screws- this will stop the motor from falling once all screws are removed.

  • Slide the motor out the bottom of the printer as shown

  • Complete this on both the left and right motor

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Take a breather. You're now done removing all the old parts and now onto the installation of your lead screws
  • Take a breather. You're now done removing all the old parts and now onto the installation of your lead screws

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Ensure the hex nut is about 6 inches from the top of the motor. (Picture A) Note- one motor has a longer cable than the other. Take the motor with the longer cable and insert it into the top (left) hole.
  • Ensure the hex nut is about 6 inches from the top of the motor. (Picture A)

  • Note- one motor has a longer cable than the other.

  • Take the motor with the longer cable and insert it into the top (left) hole.

  • Orient the motor so the cable is facing the front of the R1

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When inserting the lead screw, make sure the lead screw enters the hole on the X axis carriage Secure each motor using 4 screws.
  • When inserting the lead screw, make sure the lead screw enters the hole on the X axis carriage

  • Secure each motor using 4 screws.

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With both lead screws now installed, you can now install the new z axis end stop brackets Both brackets will be oriented in the same direction- with the hook on the left side. Take the end stop bracket, and slide it over the lead screw
  • With both lead screws now installed, you can now install the new z axis end stop brackets

  • Both brackets will be oriented in the same direction- with the hook on the left side.

  • Take the end stop bracket, and slide it over the lead screw

  • Then, clip the z axis bracket onto the x axis carriage as pictured

  • Complete this step on both the left and right sides.

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Now, with the z axis end stop brackets attached, slide the x axis carriage onto the hex nuts. As pictured, the x axis carriage now can rest on the hex nuts.
  • Now, with the z axis end stop brackets attached, slide the x axis carriage onto the hex nuts.

  • As pictured, the x axis carriage now can rest on the hex nuts.

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Now, on the bottom side of your R1 3D Printer, take the longer (farther) stepper motor wire, and plug it into the right set of pins. PLEASE note orientation (Blue wire up). Re-install the pigtail wire, starting at the top motor working your way down to the middle motor. Include the y axis motor (middle motor) in the pigtail.
  • Now, on the bottom side of your R1 3D Printer, take the longer (farther) stepper motor wire, and plug it into the right set of pins. PLEASE note orientation (Blue wire up).

  • Re-install the pigtail wire, starting at the top motor working your way down to the middle motor.

  • Include the y axis motor (middle motor) in the pigtail.

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Now, take the bottom (closer) motor and plug it into the other set of pins. Feel free to place a new zip tie to cleanup the wires.
  • Now, take the bottom (closer) motor and plug it into the other set of pins.

  • Feel free to place a new zip tie to cleanup the wires.

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Now, we will re-install the bottom plate. Re-install the bottom case cooling fan, with the positive (red) wire on the left side. Now, you can snap the bottom plate back into place.
  • Now, we will re-install the bottom plate.

  • Re-install the bottom case cooling fan, with the positive (red) wire on the left side.

  • Now, you can snap the bottom plate back into place.

  • Secure the bottom plate with the 6 bottom case screws.

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Place the machine upright. The x-axis carriage should not slam down since it is clipped into the hex nuts. To complete the installation we need to remove the top case. Please cut the zip tie securing your extruder cables, in the top of your case.
  • Place the machine upright. The x-axis carriage should not slam down since it is clipped into the hex nuts.

  • To complete the installation we need to remove the top case.

  • Please cut the zip tie securing your extruder cables, in the top of your case.

  • Unscrew the four screws securing the top case.

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With the top case removed, you can now re-install the z-axis end stops While ensuring the X-Axis carriage is all the way down on the nut, raise the z-axis bracket so it is touching the x axis carriage As you can see in picture #3, there is a gap between the end stop bracket and x carriage. That is NOT correct.
  • With the top case removed, you can now re-install the z-axis end stops

  • While ensuring the X-Axis carriage is all the way down on the nut, raise the z-axis bracket so it is touching the x axis carriage

  • As you can see in picture #3, there is a gap between the end stop bracket and x carriage. That is NOT correct.

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Using the screw and lock nut from the old z axis end stop brackets, secure the new z axis end stop brackets.
  • Using the screw and lock nut from the old z axis end stop brackets, secure the new z axis end stop brackets.

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Now that end stop brackets are installed, we can install the end stops themselves. With the orange tab facing out, secure the end stops back to the brackets.
  • Now that end stop brackets are installed, we can install the end stops themselves.

  • With the orange tab facing out, secure the end stops back to the brackets.

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Re-install the top case, and secure it using the 4 screws. With a zip tie, re-secure the extruder wire chassis. to the top case. With a zip tie, re-secure the extruder wire chassis. to the top case.
  • Re-install the top case, and secure it using the 4 screws.

  • With a zip tie, re-secure the extruder wire chassis. to the top case.

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  • Head to our Firmware Page to download and install the latest firmware for the Lead Screw Upgrade Kit.

  • Once you have upgraded your firmware, you finished your Lead Screw Upgrade.

  • If you experience issues with the X axis sticking before properly homing we recommend applying white lithium grease.

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Finish Line

15 other people completed this guide.

Harrison Team RoBo 3D

Member since: 06/11/2014

8 Guides authored

5 Comments

Could we get more specific step-by-step on installing the firmware?

Aaron Mitchell - Reply

See on the other reply.

Kevan Parang -

Yes, please, need SPECIFIC information on how to apply the firmware upgrade (something non-programmers can understand).

n6mon - Reply

All you need to do is go to the page and you need to download the aurdino software and connect to your printer and flash it.

Kevan Parang -

The firmware download page has step by step instructions. Stop by the Robo3d community if you have any questions. I am danzca6 on there. Just download the leadscrew firmware, download the latest arduino.cc site, install it and open the .ino file under the folder you extract the firmware in. Select board Mega 2560 under tools and select the com port your printer is on. Then just compile and upload. If you have compile errors, you may need to install an earlier version of the arduino software. There is a known issue with 1.6.10, but you can fix it by doing a global search and replace of fpos_t to filepos_t with the firmware open and it compiles just fine. Again, stop by the forum if you need more help.

Dan -

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