If you'd like to purchase a commercial license: https://www.etsy.com/ca/listing/1762129860/commercial-license-for-all-3dprintstuff

Impossible Passthrough Square Profile

Compatible with the following models

Impossible Passthrough Cone: https://makerworld.com/en/models/546636#profileId-464595

Impossible Passthrough Tower: https://makerworld.com/en/models/545690#profileId-463533

Impossible Passthrough Sphere: https://makerworld.com/en/models/546768#profileId-464759

Impossible Passthrough Bulb: https://makerworld.com/en/models/548041#profileId-466121

Impossible Passthrough Disks: https://makerworld.com/en/models/548050#profileId-466125

Twisty Nuts and Bolt: https://makerworld.com/en/models/554047#profileId-472658

Nested Twist: https://makerworld.com/en/models/554056#profileId-472664

If you want to learn how to make these in Fusion 360 you can follow this video.