These precision machined blocks will stick together with quite high stiction even though they are highly polished and used perfectly dry and clean.
These early models were finicky and required regular replacement of the cell in which the plasma was generated (the DuKane unit used a precision machined quartz cell).
Only the barrel, bolt and firing mechanism were precision machined.
Gunpowder, precision machined to burn evenly, is contained inside of cloth bags that are numbered.
They must therefore be far more robust in nature so are precision machined from higher quality and strength materials.
From 1900 the mercury ohm was replaced with a precision machined plate of manganin.
The sleek design was achieved with a precision machined "Duraluminum" case with a two-tone color scheme.
Volutes are then precision machined to match the impeller design.
The gun is allowed to recoil in the plane from which it is fired, using straight precision machined sliding surfaces.