Methods to improve mechanical properties of pellicle membrane

A membrane stretching table, comprising:

• a table top with a central recess;
• a mobile first x-axis arm extending over the central recess from a first x-axis side recess;
• a second x-axis arm extending over the central recess from a second x-axis side recess on an opposite side of the table top from the mobile first x-axis arm;
• a mobile first y-axis arm extending over the central recess from a first y-axis side recess;
• a second y-axis arm extending over the central recess from a second y-axis side recess on an opposite side of the table top from the mobile first y-axis arm;
• and
• a membrane stretching frame joined to the first x-axis arm, the second x-axis arm, the first y-axis arm, and the second y-axis arm.

A membrane stretching table, comprising:

• a table top with a central recess;
• a vertical piston located within the central recess;
• a mobile first x-axis arm and a second x-axis arm extending over the central recess from opposite sides of the table top;
• a mobile first y-axis arm and a second y-axis arm extending over the central recess from opposite sides of the table top;
• and
• a membrane stretching frame joined to the first x-axis arm, the second x-axis arm, the first y-axis arm, and the second y-axis arm.