That’s why I suggested scaling up or using the “Dave Method.” You need to work at a larger size because SketchUp won’t create the very tiny edge segments that would be required for the arc. You could reduce the number of segments but it won’t make a very smooth arc.
Dave, scaling up by x5 allowed me to create the radius without error, but after replacing the chamfer with a radius, strange things started happening with the geometry and I have had to revert to the flat chamfer.
In terms of form, fit and function, the flat chamfer should still work, although I was really hoping to be able to replicate the design exactly, so that I am able to more confidently create other designs.
But I have learnt a huge amount in the last 2 days, never having used a 3D or CAD program before, I have a 80% completed design
Yes, I just looked at again, although it happens rather fast.
I guess this is related to the follow me tool, if I first click the lower flat surface, and then drag along the arc, a radiused surface is drawn on the top surface and not from the bottom of the slot ?
To me it doesn’t look like a transparent face but like there’s no surface at all. Probably due to the geobetry sticking through the newly to create surface. This obstructs SketchUp to create the face all the way through the lower end.
Check if there is a surface part that you can select.