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This is a comprehensive list of OR gates. For the basic definition, see Basic Machines#Piston double-extender.

Design Summary[]

Comparison of Piston Double-Extenders
Design Thumbnail Max Inputs Smallest Size
[X×Y×Z bounds]
[volume in # blocks used]
Minimum required blocks Accessible Q? Trigger Worst Delay Earliest possible version Comments
Torches Dust Repeaters Regular Pistons Sticky Pistons Top-Half Slabs
A Ingame Piston Double-Extender 1 3×2×4
22
0 3 4 0 2 0 N/A Rising: extended
Falling: retracted
7 Ticks Icon Unconfirmednot researched Stackable
B Ingame Piston Double-Extender B 1 4×2×3
15
0 2 2 0 2 0 N/A Rising: extended
Falling: retracted
7 Ticks Icon Unconfirmednot researched Not Stackable
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