I bought Ikea Sibben chairs and new desks for my kids, but soon realized that the chair was too low for them. To solve this, I designed these chair risers, which will elevate the chair by 5 cm, making it more comfortable for kids to sit at their desks.

You’ll need to print 4 pieces — one for each leg of the chair. Simply place one riser under each foot to raise the seat height.

The model is designed with a hole in the structure to force it to have more perimeters in the middle, making it stronger.
Since the weight is distributed across four legs and this is a children's chair, the load isn’t too heavy. Using 2 perimeters should provide enough strength