It can be a little nerve racking cutting down antique frames. The timber is often less than straight, compo can be brittle and prone to breaking very easily, the gesso can be also be fragile and poorly secured to the wood.
The last part of this Watts frame was relatively easy to cut down, the compo and gesso was very secure, so no bits broke away as it was cut. Now for some small repairs and it will be ready to frame an antique painting.