new to Rhino here. I cannot get the points to show at the edges of a surface in order to edit the surface in 3D space. When I click on PointsOn the only points showing are the ones to rotate and move the surface as w whole. How do I get the points to show at the edges of a surface?
when you click the surface, does the command line say “1 surface selected”
or does it say “1 extrusion selected” ?
if it’s an extrusion, click on it and explode it. That will return it to a surface.
the next thing to do is run the useextrusions command and set it to polysurface
now try points on (or f10) to see your surface points.
yep, explode, then hit f10
your points will come up as expected.
that works. thank you so much. Am I going to have to explode an open extrusion every time? Should I be able to extrude a surface from a curve using the Gumball in order to avoid having to explode?
im asking if I can avoid the step of exploding because the tutorial im following does not show having to explode the surface made from the curve
Hi @Joe_Car
Extrusions are sort of a special “light weight” object made for those who have massive amounts of geometry on-screen. For some - in my eyes - extremely stupid reason, this was turned on by default. In order to avoid them, start a single Rhino session and run the command UseExtrusions - and then set it to Polysurface. Close Rhino and then you’ll never have to worry about them ever again - unless you need them at some point, of course 
HTH, Jakob