Chair Back

1. For the from and back surfaces i used extrude along curve instead of sweep along 1 rail.
2. Then each surface was trimed with the curve on it (the curve is not exactly on the surface so i use proyect, and if the trim doesn not work
3. Extend the ends of each side of the curve and then extrude them (using bothsides option to get a nice trim).
4. The middle part was created using surface from curve network.
5. Here is were i have to use the match comand to obtain section that are good to use.

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