I have used Cplane three point on this planar surface.
Planar surface made with planar surface from 4 point command.
- Pick origin bottom ‘nearest me’
pick x axis, ctrl osnap perp from, pick bott of surface then that origin corner and move cursor along current X axis and click,
click on base of surface for Y.
see a thick black line, zoom in and can see surface of ‘surface’ surely it should be thin line ?
Cplane setToPlanarSurface shows view of face at zoom.3dm (40.4 KB)