the penultimate process is called conching. a conche is a container filled with metal beads, which act as grinders. the refined and blended chocolate mass is kept in a liquid state by frictional heat. chocolate prior to conching has an uneven and gritty texture. the conching process produces cocoa and sugar particles smaller than the tongue can .
this mechanism is based on variable-diameter pulleys driving a wide, heavy-duty belt. this gives a wide speed range as well as the ability to change speed while the machine is running. heavy-duty drill presses used for metalworking are usually of the gear-head type described below.
a jointer or in some configurations, a jointer-planer also known in the uk and australia as a planer or surface planer, and sometimes also as a buzzer or flat top is a woodworking machine used to produce a flat surface along a board's length. as a jointer, the machine operates on the narrow edge of boards, preparing them for use as butt joint or gluing into panels.
depositing metal to build up a surface, as in hardfacing. also, oxy-hydrogen flames are used: in stone working for 'flaming' where the stone is heated and a top layer crackles and breaks. a steel circular brush is attached to an angle grinder and used to remove the first layer leaving behind a bumpy surface similar to hammered bronze.
brushed or dull polished metal is metal with a unidirectional satin finish. it is produced by polishing the metal with a 120–180 grit belt or wheel then softening with an 80–120 grit greaseless compound or a medium non-woven abrasive belt or pad. commonly brushed metals include stainless steel, aluminium and nickel.
the track 'hold your colour' uses an intro vocal sample from 'lycaeum', a song rob swire and gareth mcgrillen made with karl thomas better known later as drum and bass artist 'shockone' and jay burns in xygen, their former metal band.
cylinder wheels provide a large, wide surface with no center mounting support hollow . they can be very large, up to 12' in width. they are used only in vertical or horizontal spindle grinders. cylinder or wheel ring is used for producing flat surfaces, the grinding being done with the end face of the wheel. tapered wheel
high stock removal is a technological process with the goal of removing large amounts of material. the quantity of material which can be removed by a specific process depends on the material properties and the machining tool used.