Srf not planar when part of solid, extracted is planar?

this has been happening for a few weeks.

i work with a lot of extruded crvs mostly made of planar surfaces. on of my scripts prompts you to select a planar surface to set the cplane to. if it’s not planar it alerts you.

you can see in the grab that when that surface is part of a solid it’s not planar, extracted it’s planar, solid exploded it’s planar. this happens to me fairly regularly.


Maybe the script is using a stricter tolerance than Rhino’s default (file) tolerance?

ahh, i’ll check that out! thank you