I created some toroidal transformer mounts, copying the one the came with it. I soon realized that it needed to be larger in the middle. How do you increase the diameter of a selection? In this example, the hole is 0.250” as a reference. The outer ridge needs to be an additional 0.500” in diameter.
Thanks for any pointers.
The attached file is scaled to 1000
Toroidal Mounts.skp (2.7 MB)
One way might be to select only the geometry that needs resizing and scale it. That can be fiddly and may result in unwanted distortion. It depends on exactly what needs to be changed and how it connects to the rest of the geometry.
Another option which might be simpler would be to extract a profile section of the existing geometry and modify it to suit. Then run Follow Me with a new circle as the path. This would give you less to modify and would be non-destructive to the original which you can keep for reference until the new version is complete.
Here I drew a rectangle from the center of the thing and used Intersect Faces to get the profile on the right. I copied the profile so you can compare the change I made. I selected the edges shown in blue and moved them up 50 in.
Then a new circle on the centerline and Follow Me. Make it a component and done.
Toroidal Mounts.skp (5.2 MB) Thanks for the help. I took a slice like you said and moved it up by .250, then followed a circle. I then combined and cleaned up the object. Then displayed hidden geometry so I could select the new shape and copy, select hidden geometry of new part, delete, past new part, intersect new part and then clean it up. There was no easy about the operations, but it was quick after a little practice.
