Here you can see how to bend the sides for a classical or flamenco guitar using a bending jig.

To build your own classical guitar in your own workshop using my step by step 40 hour plus video course series visit:
https://onlineguitarmakingcourse.com

If you are interested in building a guitar in my workshop in Spain all the information that you will need about the 4 week course is available at:
http://guitarmakingcourse.org