Hi Gunter, when you're in a command the command options are shown in the upper right area of the main window.

When you're in the Fillet command (for MoI version 5) the Library option is here:



- Michael

Great, thank you Michael, sorted!
Gunter

Hi Gunter

The problem was caused by your outer shape profile has a kink in it , they must be perpendicular (the inner vertical point is sitting inside the next 2 )
The 3 points that make it up on the vertical axis have to be on a straight line then the fillet will work




ps it will be easier to mirror and work on parts if you work around the origin
I have uploaded redraw
cheers
shayne

Hey Shayne,

Thank you so much for figuring this out for me!
Many thanks!
Gunter