i am trying to create a rock by sculpting an ico sphere, but even after small amounts of sculpting, when i switch to edit mode it creates around 100,000 vertices. does anyone know how to reduce the vertices without losing the shape? i dont mind starting again on the rock by the way. here is a screenshot (the rock is around the size of the starting cube)
Shrinkwrap modifier could help you:
- Create new object with similar shape, big enough to cover your sculpted rock
- Subdivide it as you would like the mesh of your rock to be detailed (or use Subdivision Surface modifier so you can tune it later)
- Apply Shrinkwrap modifier with Target set to your high-poly sculpted rock.
You should get low-polygon version of your high-poly sculpted model. There are some useful options you can use for tuning the Shrinkwrap modifier so you can look at it's overview in Blender Manual.