Khóa núm vặn an toàn cho bếp gas

These slip-in lockouts for gas stoves were designed for the LG LGD4313ST.

The purpose is to avoid inadvertent activation of the burners by interfering with the ability to press the knob in, a prerequisite for turning them.

These are designed for the LG LGD4313ST but should work on any knob that is 68mm diameter, has a ~6.25mm diameter D shaft with the flat at the bottom or top, sits ~9mm from the front panel and require being pressed in ~2mm before they unlock and can be turned. They are fitted by sliding them on to the shaft from the left or right, then pivoting them so the exposed piece is at the bottom.

Demonstration video here: 

Included is the .f3d file if you wish to modify it for your purposes.