Convert Herman Miller Aeron Chair Cylinder to a Stool Aeron

Convert Herman Miller Aeron Chair Cylinder to a Stool Aeron

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How to Replace and Upgrade a Cylinder in an Aeron Chair to a Stool Version: A Step-by-Step Guide

Transforming your Aeron chair into a stool can add versatility and height, perfect for drafting tables or standing desks. This guide walks you through the process of replacing the chair's cylinder and adding a stool ring for height adjustment.

Tools You Will Need:


1) Remove the Seat:

  • Begin by locating the two screws on each side of the chair that secure the seat and seat mesh.
  • Using a power drill, remove these screws and carefully set the seat aside to clear your workspace.

2) Loosen the Cylinder:

  • With the seat removed, turn the chair on its side.
  • Use a wrench to twist the cylinder counterclockwise. Continue twisting until the cylinder can be easily separated from the chair.

3) Remove the Cylinder from the Base:

  • Turn the chair's base upside down to expose the bottom of the cylinder.
  • Using a hammer or mallet, knock the cylinder off the base. Proceed with caution to avoid damaging the base.

4) Prepare the Base for the New Cylinder:

  • With the old cylinder removed, this is a good time to replace any casters if necessary.
  • Return the base to its upright position in preparation for the new cylinder.

5) Install the New Cylinder and Stool Ring:

  • Take the replacement cylinder and insert the bottom end into the opening of the chair's base.
  • Slide the stool ring over the cylinder and adjust it to your desired height. Secure the ring in place using the provided knob.

6) Attach the Cylinder to the Chair:

  • Align the top of the new cylinder with the opening at the bottom of the chair frame.
  • Carefully insert the cylinder, ensuring it fits securely.

7) Test the Cylinder's Functionality:

  • Use the chair's lever to test the new cylinder's functionality. Ensure that it can adjust smoothly and hold its position.
  • Remove the cover of the tilt mechanism to expose the top of the cylinder.
  • Adjust the black pin using a hexagonal screw head to ensure it is horizontal for proper function.

8) Reassemble the Chair:

  • Place the seat pan back onto the chair frame.
  • Align the seat with the frame, starting the screws by hand to ensure proper placement.
  • Tighten the screws using a hexagonal head on a power drill to secure the seat.

Final Thoughts:

By following these steps, you've successfully upgraded your Aeron chair to a stool version, enhancing its functionality and versatility. This DIY project not only saves you money but also extends the life and usability of your chair. Whether you're using it at a standing desk or a drafting table, your newly upgraded chair is ready to support you in comfort and style.

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