A construction apparatus for forming modular construction components is disclosed. The construction apparatus comprises a first shell piece and a second shell piece that define an interior chamber defining a space for receiving a moldable material. The construction apparatus further comprises a separation device to move the first shell piece and the second shell piece from a closed configuration to an open configuration. The construction apparatus further comprises one or more cores within the interior chamber, one or more pins extending within the interior chamber, and one or more retaining plates for retaining the pins on the first shell piece. The interior chamber may be filled with the moldable material in the closed configuration and the moldable material may be cured. The construction apparatus may be shifted to the open configuration by the separation device and the pins and retaining plates may be used to extract the molded block from the first shell piece and/or second shell piece.