This is a case for a Weller WES51 and accessories.

Latches are from https://www.thingiverse.com/thing:4582978/files and adjusted to fit my design.

Both hinges were printed with heavy walls to make them solid and use M3 x 30 screws for assembly. Assemble the hinge before mounting it to the box. Now, the hinge is mounted to the box and lid using M4 screws and nuts.

Infill and walls/bottom/top are up to you.