RFTools Builder Mod 1.16.5/1.15.2/1.14.4 has recently kicked off an add-on for RFTools Base. It adds to your world a builder and every shape card essential for your builds.

RFTools Builder’s Functions
It’s an add-on mod including the builder and all shape cards. The next time, the shield system, composers, scanner, and other items will appear in your game.
About the Builder
It is a strong block that will mine areas and carry out other operations. They consist of pumping liquids, collecting objects, and building shapes.
Notes!
It is still alpha. Hence, it can contain many bugs.
In the future, the author uses the present creation together with RFTools Power.
RFTools Builder is a Minecraft mod that supplies technology to improve the energy in-game. It depends on RFTools Base and McJtyLib as well. Therefore, you have to install both of them. Additionally, it also requires you to download and establish Minecraft Forge.
How to install RFTools Builder Mod:
Assure that you have already installed Minecraft Forge
Define the location of the Minecraft application folder.
On the windows, open Run from the Start Menu, write %appdata% and click to Run
Open Mac on the finder, press and hold Alt and click to Library on the peak of the Menu Bar. Open the Application Support directory and look for Minecraft.
Put RFTools Builder Mod you have already downloaded (.jar) into Mods directory.
When you start using Minecraft, open the mod button, you will realize that RFTools Builder Mod has been set up.
Screenshots