CLICK HERE FOR INDEX PAGE | |
ROBIN DAY POLYPROP CHAIR - MANUFACTURING THE FRAME | |
PDF FILE - CLICK HERE FOR PRINTABLE WORKSHEET | |
The steel tube is cut to size using a guillotine. | |
The burr is removed by hand using a hand file. | |
A jig is used to form the tube / legs to the correct curve and angles, after heating to ‘red heat’. | |
The supporting rails for the underneath of the chair, are manufactured. The ends of the tube are ‘pinched’ so that welding is easier. | |
The supporting rails are drilled and ‘de-burred’ to remove sharp edges. | |
The joints are gas welded. These provide a permanent and strong joint, that allows a little flexibility in the frame. This absorbs sudden shocks, such as people sitting heavily on to the seat. | |
Metric screws are used to fix the seat in position. This means that the chair can be dismantled and repaired or recycled. | |
A final quality control test is carried out, checking for any faults. | |
CLICK HERE FOR PRODUCT DESIGN INDEX PAGE | |
|