Trickle Vent

thingiverse

I've yet to print this version, however I attempted assembling it previously by printing in place, only to realize the tolerances were too tight, so I revised it into this solution. The knob should be inserted into the body through the hole first, followed by the thin rails being clipped into the end slots, allowing for a slight play that will aid in movement. The slider should then slide along with the rails as a supportive backing behind it.