Attaching white soles to black boot uppers using a vertical last.

Industrial footwear factory with white workbenches, blue plastic storage crates, and multiple workers in sarees performing similar assembly tasks under bright overhead lighting.

Continuous use of both hands to reach for components, fit uppers onto lasts, apply adhesive with a brush, align soles, and press them into place. The motion is repetitive and involves frequent reaching and grasping.

Black boot uppers made of flexible synthetic material and white shoe soles made of rigid or semi-rigid material. There are dozens of these components in various stages of assembly.

Vertical wooden lasts mounted to the workbench to hold the boot shape, a small handheld brush, and a container of adhesive.

High precision is required to perfectly align the edges of the white sole with the perimeter of the black boot upper before pressing them together.

Parallel work where multiple workers are stationed at the same long workbench, each performing the same sole-attachment task independently.

1. 01Pick up a black boot upper from the workbench or a blue bin.
2. 02Slide the boot upper onto a vertical wooden last to hold its shape.
3. 03Dip a small brush into the adhesive container and apply a layer of glue to the bottom of the upper.
4. 04Select a white sole from the stack on the table.
5. 05Carefully align the sole with the glued bottom of the boot upper.
6. 06Press the sole firmly onto the upper to ensure a secure bond.
7. 07Remove the assembled boot from the vertical last.
8. 08Place the completed boot into a blue plastic crate for the next stage of production.