Wafer loaders having buffer zones

A wafer loader comprising:

• a wafer;
• a plurality of loading sections that protrude from a main body and are configured to be arranged along and support an edge of the wafer, wherein each of the loading sections has a groove into which the edge of the wafer may be inserted,
• wherein at least one of the loading sections comprises first and second protrusions having first and second inner sides, respectively, said first and second inner sides facing each other to define the groove, the first protrusion comprising a predetermined length and the second protrusion comprising a predetermined length that is substantially equal to the predetermined length of the first protrusion, one of the first or second inner sides comprising a first surface to contact a surface of the wafer, the first surface comprising the predetermined length, and the other of the first and second inner sides comprising a second surface comprising the predetermined length,
• wherein the first surface protrudes substantially vertically from the main body and the second surface protrudes from the main body at a slant,
• wherein the second surface is recessed to define a buffer zone on the second surface, the buffer zone extending the predetermined length of the second surface, and
• wherein a bottom edge surface of the wafer is configured to contact a floor surface of the groove having a shape that coincides with the bottom edge surface of the wafer.