Extrusion Vs Polysurface which is lighter?

Hello,

If geometry is created in the form of an extrusion and polysurface, which of them is lighter and uses less memory?
Hence, what is the benefit of using the ConvertExtrusion command, converting extrusions to polysurfaces?

In principle, extrusions are lighter, that is the reason for their existence as a separate object type.

Exrrusions do not have exactly the same characteristics as polysurfaces, so sometimes it is desirable to convert them into polysurfaces.

IMHO, you do not need to use extrusions at all unless you have many, many such objects to deal with - only then will the file size difference really matter.

I don’t really get you

Some reading for you:

http://docs.mcneel.com/rhino/5/help/en-us/seealso/sak_polysurfaces.htm

https://wiki.mcneel.com/rhino/rhinov5status_extrusions

– Dale