This is an extended cup holder liner, specially designed for the IKEA Fredde desk. It can be directly installed into the original cup holder opening.
 

The diameter of the original cup holder is73 millimeters。The attached STL file will increase the available diameter to78 millimeters。
 

We also provide a .f3d file containing user parameters for customization. To open the file in Autodesk Fusion 360, go toModify → Change parametersAnd adjust the Insert_InnerDiameter according to the required size. The model will automatically update to fit your cup.