How to reset Bounding Box without effecting the object?

Question

I got a problem with an upright object which with tilt bounding box.

Because its bounding box is tilt , I can't symmetric sculpt properly.

Although I can use mirror modify to get symmetric effect, still wondering is there a way to reset the bounding box without effecting the object inside?

This is the object I made.

Its bounding box is tilt.

File uploading has been completed. Thank you. – Edie Jun 18 '18 at 16:32 — Edie, Jun 18 '18 at 16:32

score 1 · Accepted Answer · answered Jun 18 '18 at 16:37

Your object has been scaled and rotated in object mode but the rotation has not been applied.

In object mode press ⎈ Ctrl+A to apply transformations.

read: Why is it important to apply transformation to an objects data?

How to reset Bounding Box without effecting the object?

1 Answers1