Polygon to NURBS with Rhino5(64bit): Windows out of memory -> crash

Rhino Rhino for Windows
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1

Hi all,
really need some help.
Currently working on a project with a 360MB file, including a scan of a hand(polygonnet) and want to convert the hand from polygon to NURBS. Get the message “windows run out of memory” because the model has to many “sides”(more than 20000)
System:
Windows10
32GB RAM
AMD Ryzen7 1700X
M2 Flashcarddrive 250GB, 500GB SSD as main drives + some other HDD
Graphic Card: NVIDIA GeForce 1070

I thought not to bad for this. But saw Rhino using up to 32GB of RAM and then crashing.
Any idea what i could do to avoid this?
I am quite new to CAD and all the “tricks” and “traps”. i recall there is a possibilty to tell Rhino to do calculations softwarewise or using hardwaresettings (?)
Could this be one mistake i did?

thanks for any tipp
C.

2

Hello - MeshToNurb converts each polygon in a mesh to a three or four sided surface, it does not reverse engineer meshes to smooth surfaces - (https://wiki.mcneel.com/rhino/meshtonurb) there are no tools for that in Rhino other than expertise with the surfacing tools. There are some plug-ins that may help -

https://www.rhino3d.com/resources/#tabs-17

-Pascal