This is a spare part for attaching the Ikea Tertial work lamp (or any other lamp with a diameter of the cylindrical part entering the holder: ~13 mm).

Required parts (in my case from original clamp):

• L screw M8 (it has 7mm diameter on horizontal part without thread);
• nut M8.

Print settings:

• Layer height: 0.2 mm
• Perimeters: 4
• Solid layers - top/bottom: 5 / 5
• Infill: 40 %
• Supports: No
   

The clamp is loaded quite heavily and even if the spare part is designed more strong as the original clamp, I would recommend to use PETG.