Here are some pictures of the new keyboard.
The larger joystick is much better to use than the old one. Also the feel of the keys is much more rigid. The keyboard weighs almost 1.2 kg. The wooden parts are made out of oak.
The wrist rest is attached to the keyboard with magnets. There are two magnets in the keyboard and in the wrist rest. This works quite well.
After all I'm quite pleased how it turned out.