IKEA chair wear simulator. Note says: "During development, living room chairs are put through different strength and durability tests simulating a person sitting down, moving, and getting up. These tests force up to 100 kg (220 lbs) of pressure onto each chair in more than 10 types of tests."
Fullsize image: https://diqn32j8nouaz.cloudfront.net...e_fullsize.jpg
https://diqn32j8nouaz.cloudfront.net...ar_machine.jpg
Previously:
https://www.homemadetools.net/forum/...152#post115730
https://www.homemadetools.net/forum/...826#post100118
https://www.homemadetools.net/forum/...516#post139354
https://www.homemadetools.net/forum/...314#post135087
https://www.homemadetools.net/forum/...547#post162599
