Manufacturing apparatus for manufacturing mask frame assembly

A manufacturing apparatus for manufacturing a mask frame assembly having a mask and a frame, the manufacturing apparatus comprising:

• a stage for carrying a frame,
• a resistance reducer located on the stage, and
• a thruster configured to push opposite sides of the frame inward, wherein the thruster is configured to apply a pushing force to the frame before the mask is bonded so that the frame is in a pressed state, and remove the pushing force after the mask is bonded so that the mask generates a tension restoring to a natural state, the tension configured to cancel out some of a shrinking force of the mask,
• wherein the resistance reducer comprises an air supper which is configured to blow air towards a surface of the frame near the stage when the thruster pushes the opposite sides of the frame inward to reduce or eliminate a frictional resistance between the frame and the stage when they move relative to each other, thereby reducing an error between an actual deformation and a simulated deformation of the frame when the thruster pushes the opposite sides of the frame inward.