A cover die holder block for a high-pressure die casting apparatus includes: a first cover die holder block component having defined therein at least a portion of a cover die holder block pocket surface configured to accommodate at least one die insert defining a mold surface, and at least portions of two opposing lock faces adjacent the cover die holder block pocket surface; and a second cover die holder block component, the second cover die holder block component having two projections extending therefrom, each projection being accommodated in a corresponding recess defined in the first cover die holder block component behind a respective lock face, in a direction of largest stress applied to the lock face during operation. The first and second cover die holder block components are separately fabricated and are connected to yield the cover die holder block.

In a die-casting machine with toggle-joint or without toggle-joint, a threaded section or a shaped section of horizontal columns is made by first carrying out turning and then rolling.