Maya tutorials: polygon modeling (4) symmetric modeling by the instance

For the explanation about polygon modeling, please refer to
Maya tutorials: polygon modeling (1) basic operation
Maya tutorials: polygon modeling (2) operation of the polygon mesh
Maya tutorials: polygon modeling (3) Subdiv Proxy

symmetry by subdiv proxy

When you make the polygon mesh like the above figure symmetric by subdiv proxy,


the object is made symmetrical at the point where X coordinate is minimum.

symmetry by instance

Proxy > Subdiv Proxy
reset settings


make a subdiv proxy.


Select both the smooth mesh and the proxy mesh.


Edit > Duplicate Special
select Instance at Geometry Type, and set -1 to x scale.
push the Apply button


They become symmetric around x=0.