Sawmill Plank Trapdoors (Woodworks addon)

You can make one trapdoor with one Plank in the Sawmill from Team Abnormals's Woodworks mod.

Currently supports the following mods

Architect's Palette - (Twisted)
Atmospheric - (Aspen, Grimwood, Kousa, Morado, Rosewood, Yucca)
Autumnity - (Maple)
Darker Depths - (Petrified)
Environmental - (Cherry, Willow, Wisteria)
Gardens of the Dead - (Soulblight, Whistlecane)
Quark - (Azalea, Ancient, Bamboo, Blossom)
Snowy Spirit - (Gingerbread)
Twigs - (Stripped Bamboo)
Twilight Forest - (Canopy, Darkwood, Mangrove, Mining, Sorting, Time, Transformation, Twilight Oak)
Upgrade Aquatic - (Driftwood, River)
Windswept - (Holly, Chestnut)

This is meant to be played with 6 Trapdoors, though it's optional.