Brio Geared Switch: Chìa khóa vặn nhẹ nhàng cho bé

This is a functional add-on for the Brio Mechanical Geared Interchange (M1 Track) by cgillstrap.

While the original geared switch is a masterpiece of engineering, the standard knob can be quite stiff or too small for toddlers and small children to operate comfortably. This Easy-Turn Key provides the extra leverage needed to switch tracks with minimal effort, making the mechanical system accessible to even the youngest "engineers." Print just one key to operate an entire room of geared switches.

Recommended Print Settings

Because this part will be handled and twisted frequently by children, durability is key.

• Material: PETG or ASA highly recommended (PLA works but may snap under high torque or rough play).

• Layer Height: 0.2mm.

• Infill: 25% or higher (Grid or Gyroid for internal strength).

• Wall Loops: 3-4 perimeters to ensure the "socket" of the key doesn't strip.

• Supports: None required.