How to put a low tangency weight fillet on Cuboid?

[thomas-buchan]

Hello 

I am trying to put a very shallow fillet on a cuboid, the screenshot below is a simplified version of what i am trying to do.

By setting the tangency weight to a lower value i get the flat fillet i need but once the fillet hits the bottom of the smaller face i get a error and the fillet does not carry onto the longer faces edge as shown in the screenshot below if the weight is set too 1. 

How do i get the second picture's fillet but with a very shallow fillet as provided with the setting from the first picture?

The actual part i'm putting the fillet onto is more complicated and these are just tests to get the process worked out.

Help is appreciated. 

[thomas-buchan]

I'm either asking something really dumb or it can't be done with the fillet command. 

[laughingcreek · Accepted solution]

once you change the tangency to anything but 1, the surface is no longer an arc, so it's much more difficult to solve from a mathematical standpoint. from a conceptual stand point, fillet is probably the wrong tool to use anyway. it's intended to be used as a edge finishing tool, not as a form modeling tool, so it wasn't really built for cases like these.
some ideas-
-use the fillet tool, but over build your solid and extrude off the extra after
-use an extrude, sweep, or loft to form the edge

[thomas-buchan]

Thank you for getting back to me.

Learning sometimes you are asking too much off a tool is just as helpful.

I used extrude in the end, it was a bit janky but the outcome is acceptable.