Ikea Skadis Shelf - Parametric

This shelf is parametric, meaning you can change the size of it easily (if you have Fusion). If you don't have Fusion, I included some premade shelf models ready for download. 

Changing Parameters in Fusion

When opening the Fusion file, the shelf will be at its smallest size by default. To change this, navigate to the modify tab and click change parameters. All user parameters are commented regarding whether you should or shouldn't change them. To prevent breaking the model, don't modify any user parameters that say Dont change.

Most people will probably only need to modify the shelf length, so to do that, find the user parameter labeled pegCount and modify it. The number represents the amount of pegs that the shelf spans (an example would be changing the pegCount to 4 to make the shelf span 4 pegs). Simple.

This shelf isn't meant to sustain heavy loads, so be careful what you display on them!