Big file cant export

I’m trying to export my file in skp and realised that is huge and I don’t understand why since is only a few models, i tried purge and save small but it doesn’t seem to work how can i simplifyor reduce my model to be able to export without crashing my computer.

please help thank you so much

  1. There are a couple of surfaces that are way more dense than they need to be. Something that looks more like a curve is a surface and has over 3 million triangles when asking for polygon count. Recreate those surfaces or delete them if they are not needed
  2. Move your geometry closer to world origin
  3. Update to Rhino 6.35, you are 28 service releases behind
  4. Make sure you have a valid license

Here zoomed in on one of the surfaces that look they’ve been created in interesting ways