Cross-section of a 4545 aluminium profile.
The 4545 stool has a seat height of 45 centimetres.
Aluminium profile offcuts being sold on Carousell, an online marketplace for secondhand goods.
Top view of the seat.
The offcuts are stacked and held together by connecting plates, hex socket button screws and T-slot nuts.
The corners are held together by 90 degree brackets.

4545 stool

Extruded aluminium profiles are commonly used to make structural frames in automation and production lines. Suppliers provide these aluminium profiles in extended lengths, usually ranging from 2 to 3 metres. Companies utilizing these profiles then cut them to the required lengths, producing offcuts. Typically, these offcuts are collected and shredded for recycling.

The 4545 stool is made from offcuts of 4545 aluminium profiles which would otherwise be shredded for recycling. To accommodate the odd and short lengths of the offcuts, they are stacked and held together by off-the-shelf connectors. As such, the only tool required to assemble the stool is an Allen key, making it accessible for anyone to build.

Designed by Ng Keng Wei
2024
This project is the result of a 3-day workshop on sustainable design.
Under the guidance of Tommy Cheong