Exactly, select the tool and then select the edge. (following the advice from the Markster)

I don't have any problem with your file.....

chrisb wrote: ↑Mon Feb 28, 2022 6:14 pm For such references use a ShapeBinder to transport geometric information from one body to another.

It's in the same body.....

OP see here

Once you have the sketch inside the Body, you may use the external geometry tool

Or you can use attachment see Basic_Attachment_Tutorial

Use the array command.......?

Path_Array

No matter how I try I cannot form a loft that only contains a single sketch......
I don't know how i missed the angle

Anyhow here is an updated file....

You need to learn how to use loft correctly...... https://wiki.freecadweb.org/images/2/2c/PartDesign_AdditiveLoft.svg There should be two sketches in the feature. It also helps if there are the same number of edges in each of the sketches (I broke the circle into four arcs.) There is no need for a d...

It's also possible to use an edge within the sketch, just make the sketch visible and use select reference option in the revolution dialogue.

Quite right, I thought the two were at the same indent, my mistake.

Looks like it breaks the single solid rule?