I've been trying to modeling this simple diamond shape for a couple hours and I can't seem to figure out a way to model it with good edgeflow and for it to be sub-dividable. Its such a frustratingly simple model as well!!
I always tend to always have trouble keeping everything as quads when it comes to objects that end in sharp corners like these. My most intuitive attempt was starting from a basic pyramid primitive but, that wont subdivide properly.
Any tips about topology and edgeflow guys?
You can do this in couple different ways. I'll present you two of them, and both non destructive.
As a base mesh you'll need to create diamond shape with triangle-like quads (yes, they are ok, and they are still quads).
Select outer/sharp edges and add to them Mean Crease - I've used 0.96 for base of the mesh (square) and 0.8 for the side ones.
After that add Subdivision Surface modifier.
This one is simpler and recommended.
Add Bevel modifier, choose Limit Method > Angle. Set number of Segments and Width.
Add Subdivision Surface modifier.
