I am going to try to rewrite someone of the code. The old version is archived but not deleted so packs don't break
Tinkers Mechworks Fork is a fork of Tinkers Mechworks to 1.12.2. The code is very bad and my apologizes. Only the drawbridges were ported since i didn't need the redstone for my need. I may port it later but i didnt want to do something that i didnt need. Some code was based off of fuj1n fork. I forked his and fixed some redstone things. Use this build at caution, because this is 100% unoffical, and i dont know how stable it is. Like i said it is very bad code.
Mechworks is an addon for Tinkers' Construct with some interesting mechanical tidbits.
Drawbridges: Place and retract any kind of block, including ones not normally moveable with pistons. They also hold their own inventory as items, meaning you can place drawbridges with drawbridges!
mDiyo - Drawbridges
fuj1n - Some 1.12.2 work
CrankySupertoon - tried to finish some 1.12.2 work