I'm trying to get a fillet along that edge that can blend into the larger radius but I'm absolutely stuck!
Darr,
Try a variable fillet, example, you can do a .125r to zero,
Frank
I tried that but it gives a visible line that the light can catch.
can you post your 3D model here?
You can draw a closed profile in the corner and use delete & fill face to make all blend together
Added
How about this?
I can't tell if it's the light but there is visible surface delineation?
Yes, it's then if you like it then you can use it to split the solid body
Ohhh. I see. Any chance you can reshare that part file? I'd like to follow your steps please.
Sure - see att. file
Hi Darr,
Then there is also this generally well-known method - Attached.
Darr,
Try a variable fillet, example, you can do a .125r to zero,
Frank