Here is a 3D option for the engine base block of the Vulcan Centaur papermodel from AXM website. It's in 1:96 scale.
For those who find it difficult to build the Vulcan Centaur engine block, you can glue this 3d part.
Use white pla filament and glue the engine nozzles paper parts on it.
Download the Vulcan Centaur papermodel from my website here.
The author marked this model as their own original creation.