I’ve always found the bend tool to be awkward - I never get the item to bend accurately using the click and drag method
Is there any way to select three points and tell Rhino to bend through those points?
not sure if this helps, but I love the precision of the “-flow” command
you need to take care of creating clean base&target curves, but then you get very precise and repeatable results.
maybe give this a try
you can use limit to spline in the options if that helps, also i noticed that the preview is not always good once you complete the geometry looks alright.
alternatively if you are looking for a more precise way to bend through 3 points for instance use cageedit and use the option line built to 3 points and degree 2 that will do just that.