AutoCAD blocks: default base point when inserting an entire drawing as a block In some drafting workflows, an entire DWG file is inserted into another drawing as a block. By default (when no custom base has been set), what Cartesian base point will AutoCAD use for the block insertion?

Introduction / Context:
Blocks are reusable elements in AutoCAD. Sometimes a whole drawing (DWG) is inserted as a single block into another file. Understanding what point AutoCAD treats as the default insertion base is essential for lining up site plans, details, and standard components without tedious repositioning.

Given Data / Assumptions:

• No custom base point has been defined in the source drawing using the BASE command.
• The user is inserting a DWG as a block via INSERT or DesignCenter.
• World Coordinate System (WCS) origin is unchanged.

Concept / Approach:
When a block or an entire DWG is inserted and no explicit base point has been set, AutoCAD uses the drawing’s base point. By default, that base is the WCS origin at coordinates 0,0 (and 0,0,0 in 3D). If you use the BASE command in the source file, you can redefine this point, but absent that, the origin is used.

Step-by-Step Solution:
Open the source DWG and verify no custom base point has been set.Insert the DWG as a block into the target file.Observe that the insertion is referenced from the source drawing’s origin, i.e., 0,0.Therefore the default base point is 0,0.

Verification / Alternative check:
Use the BASE command in the source drawing to set a known base point, reinsert the DWG, and confirm the insertion grip now appears at that chosen coordinate. Without setting BASE, the origin 0,0 is used, confirming the default behavior.

Why Other Options Are Wrong:

• 10,10 / 20,20 / 30,30: These are arbitrary coordinates; AutoCAD does not default to these values unless the source base is explicitly set there.

Common Pitfalls:
Forgetting that UCS changes do not alter the drawing’s base; the BASE point is independent. Also, mixing up INSUNITS can cause scale surprises even if the base is correct.

Final Answer:
0,0