How do I rotate on sub-object level using, with alternate pivot?

[DrStein99]

I'm practicing modeling a low poly cartoon tree and extruding a cylinder all over the place and having fun with that.  I know what I'm trying to do is probably pretty common, but I don't see anything obvious - or more confusing in the many pivot and axis systems I have to choose from.

If I select a group of polys and want to bend them at the base, instead of the middle of the selection:

How do I do that?  In the past I would detach to another object, reset the pivot and then attach again, which got me by for making a chain-link fence - but seemed like an inefficient method.

Can someone advise please?

[kgokhangurbuz · Accepted solution]

Hi;

This is actually fairly simple process, please follow the instructions below;

-Create a reference object to be selected as a pivot (i usually use a Point Helper (Create > Helpers > Standard> Point).

-Position it where you want to use it as a pivot point reference.

-In the top toolbar menu (by default), under the Reference coordinate System, click on Pick, then click on your preferred reference pivot (Attached Image: 1)

-Go to your object, and go to your Sub-Selection (Vertex, Edge, Polygon, etc), select your sub-parts of your object.

-Activate an transform tool and go to Reference coordinate System again, from the rollout menu, choose "Point001" as you defined your point helper as a ref pivot.

-Change your Pivot control system to "Use Coordinate System" (Attached Image: 2).

-Now you have a custom pivot point.

Image-1                               Image -2

Let me know if this is your solution.

Best regards;

[DrStein99]

OK this works better, then I was doing - thanks for the reply.