Office Chair Leg Case Study

Processes: CNC Machining, Pressure Die Casting, Anodizing, Painting, Powder Coating

Tooling Material: H13 hardened to 42HRC

Pressure Die Casting Material: A380

Lead Time: 40 days (mold build & production of first samples)

About The Project

Easyjust is an Australian company which created a new design for a stable, adjustable and all-purpose base to prevent the uneven rocking and tipping of tables so common in restaurants. They contracted with KangDing to make several prototype versions of the base in various materials and finishes.

Office Chair Leg

Easyjust Table Leg Prototype

How The Parts Were Made

The first run of prototypes were CNC machined from aluminum. Many different finishing techniques were applied, including a high polish, powder coating, silver anodising and painting. These were sent to the customer for approval, and upon review they elected to proceed with making a pressure die casting tool for a limited production run.

The pressure die casting cavity and core were made from H13 tool steel hardened to Rockwell 42C. The internal faces were hand and machine polished to Ra 1.6, which is a measure of surface smoothness. In addition to the mold tooling, special holding fixtures were also made for post-machining of tapped holes, threading, etc. The final product was left unplated but polished to a medium-high gloss.

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We are very impressed with the quality and efficiency. The product is now a commercially available success.

Trevor Watson

Managing Director, Easy Just

We would like to thank Mr. Trevor Watson for giving us the opportunity to be involved in this project from start to finish. It has truly been a pleasure doing business with him.

Gordon Styles

President and Founder, KangDing