Alternative idea to the prismatic(slider).
To alternate between multiple hot ends, mount the hot ends on a revolving plate, and splayed as you have noted.
The plate is at an angle (cam), and revolves like the lens on a microscope with a small servo, or NEMA 8 stepper motor.
NEMA 8 Frame Size(20 x 20 mm)
1.8° Step Angle
Torque - Up to 4.25 oz-in
To alternate between multiple hot ends, mount the hot ends on a revolving plate, and splayed as you have noted.
The plate is at an angle (cam), and revolves like the lens on a microscope with a small servo, or NEMA 8 stepper motor.
NEMA 8 Frame Size(20 x 20 mm)
1.8° Step Angle
Torque - Up to 4.25 oz-in