This is a cable driven blast gate for 2" ABS drain pipe. Only the flanges, cable guides, and label are 3D printed and the rest of the components are made from 1/2" plywood, although it would be possible to print those as well. Step files included in case you want to reference the plywood parts too.

The system uses go-kart throttle cable (or bike brake cable) to actuate the gate.

Hardware used is 5MM bolts and nuts.

More info on the assembly and design can be found here:
https://youtu.be/hxN0cn07w18
https://youtu.be/aDBNZz-_VHQ