I'm going absolutely nuts rebuilding blocks and creating the same thing I just created over and over again. Please, make a reconstructor type item. You left-click a block you want to copy, if you have the bits in your inventory, you can copy it with a right-click. That's my idea anyway. I just need something to make this copying and reconstructing process faster.
Edit: Just thought of the chance for different modes on such a tool. I realize I'm talking about potentially completely new programming (I can nearly even begin to read the code used for chrome) but this would be a really useful tool.

So... I'm playing on a modded server and didn't realize the blueprint I found was part of the same mod. I'll just see myself out, thanks.

Before you do, please close the issue :)

Hopefully you are fine now

You can already do that... Craft a blueprint, rightclick your build, rightclick somewhere else and it'll try and reconstruct the block from the ground up (meaning if you don't have enough bits, it will look unfinished)

So... I'm playing on a modded server and didn't realize the blueprint I found was part of the same mod. I'll just see myself out, thanks.