Office Chair Feet - Customizable (fusion 360)

I wanted to accomplish 2 things:

1. Lower the chair, because the lowest setting with the wheels is still too high for me.
2. Use the chair on wooden floors without destroying them.

This model is for an ikea markus chair, but I've uploaded a .f3d and a .step file so that you can customize the parameters so it will fit your office chair as well.
You may need fusion 360 to edit the files.

I was going to buy rubber to stick to the bottom of the feet but a cheaper option was to cut up an old rug and use it as a floor saver.

The feet are held in by friction so if I pick up the chair they won't fall out.

The chair weight + myself is about: 20kg+70kg=90kg split between 5 feet.

Doge donations: D5cqNG1nHCRWeyFHv5LaJNrMP54MVyM2Az
Much appreciated!