Elegant way to adjust this angle (which has another object which must stay parallel to it) Hi,
So I decided i want a steeper angle on this hollow wedge.
I want to move the green vertices to where the red marks are.
but the object marked purple is embedded in the face, and if I just move the green vertices, it will deform and look awful and wreck my nice flat face.
purple object also protrudes through the face to the other side.
Anyway, how would -you- sort this out?

heres a wireframe view, i've attempted to rotate the lot, but the bottom vertices need to be extended to EXACLY in the right place, but i dunno how to ensure that precision
see my response to Nascent space above,
the missing link was to then change 'transform orientation' to normal, which allows me to scale the face along its face.
BUT not as elegant as hoped, because i ended up having to carefully line up the bottom vertices with the face of that bottom plate. error there doesn't bother me as much, but its not perfect, so still interested in ideas