Create an easy tool in fusion incase you want to add fillet to your part.

To use it, if you want to generate a round fillet, don't have to do anything, just resize the fillet to your desired size.

If you wish to create un-mirrored fillet, change the value of the offset. It can be 0.

There are 2 parameters, one is size of the cube, the other is the offset, which controlls the distance between the center of the circle to the corner of the cube.