Elements are aligned using coincidence-type restrictions. You can get concentricity, coaxiality, or coplanarity depending on the elements you choose. 10 -3 millimetres is the tolerance, or the smallest distance that can be utilised to distinguish two items.
To choose the hole axis, right-click the circular face and choose Other Selection.
Select the face with the Ctrl key as shown:
In the Dialog Box, click Constraint Defined. The dialogue window for constraint definition appears.
Check the option for Distance.
To confirm, click OK.
Only Geometrical Constraint should be active.
From the Profile toolbar, select Circle.
To define the one of the circle, select the corner centre.
To define the circle dimensions, drag the cursor.
When you're happy with the dimensions, click on the geometry.
The Coincident constraint constricts two points together or forces one point to lay on a curve. A coincident constraint can also cause points and lines to be confined to surfaces in a 3D sketch.
The Contact Constraint binds a segment to a point, a line, or a plane. The system prompts you to choose a point, a line, or a plane once you choose the command and a manikin segment.
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