Wick structure for thin heatpipes

A method of forming a heatpipe for use in a chassis of an information handling system, the method comprising:

• positioning a mandrel in an interior of a tube, the mandrel having an outer surface comprising a first portion that is generally continuous and a second portion comprising a plurality of longitudinal indentations, wherein the plurality of longitudinal indentations and an inner surface of the tube form a plurality of longitudinal cavities;
• adding a wicking material in the longitudinal cavities;
• heating the mandrel and the tube, wherein the wicking material forms a plurality of ridges based on a shape of the plurality of cavities;
• removing the mandrel from the tube;
• compressing the tube to configure the tube with two sides, wherein each ridge of the plurality of ridges has a base in contact with a first portion of the inner surface associated with a first side of the two sides and each ridge extends for contact with a portion of the inner surface associated with a second side of the two sides, the plurality of ridges dividing the interior of the tube into a plurality of vapor cavity areas;
• adding a working fluid in the tube;
• and
• sealing the tube.