How to undo the back cushion of a Florence Knoll easy chair?  

@bj, Your jpeg didn't come through but, depending on model, I believe the chairs might have what is called in the US 'tightback' or 'fixed cushion' upholstery in which the back cushions are sewn directly to the the material wrapping the back frame or panel.

@spanky would probably know better, but any competent upholsterer should be able to reproduce the technique.

The image isn't loading for me so I can't tell which chair you're talking about.  They all have model numbers so if you can find the same one online with a model number, that would help (in case you can't get the image to load).

Hey Tktoo2,

Thanks for your reply!

It's not sewn, as the cushion has a wooden support. Some piece of board, and the whole must have been fixed after the foam and fabric was added.

@bj, Yes, you're right that there is a rigid wedge-shaped support panel behind the back cushion on these. I don't know how these are fastened to the frame, but it should become apparent as you begin to strip the original upholstery or maybe when you remove the dust cover from the underside. Good luck! Great iconic chairs!

Informational thread. Thanks