CAD tip # 3987:

Question

CAD

% platform category

Intersection osnap does not find the intersection.

You are trying to snap to an intersection of two line entities but AutoCAD doesn't snap to the intersection point, despite both objects appear to intersect in 2D (and APPINT works fine).

Make sure both objects really exactly intersect in 2D - they may lay in different UCSs or their "zero" Z-coordinates may be just rounded values. Try to temporarily set LUPREC to 8 and issue the LIST command to check exact coordinates.

ACADACLTACADMADTMDTMap

*CAD

26.8.2004 37685×

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applies to: AutoCAD · AutoCAD LT · AutoCAD Mechanical · AutoCAD Architecture · MDT · AutoCAD Map 3D ·

See also:
Tip 14443:	Connector, notch, groove, cutout or other curve- breaks - easily with dynamic blocks.
Tip 13887:	ClosestPt - the nearest point on another curve
Tip 12766:	Lines with a single grip, incorrect osnaps, intersections, offsets, hatches - CheckLarge
Tip 11295:	Iterative Move, Scale and Rotate - till boundary touch (MoveTill).
Tip 10383:	The shortest path between two points on a network.

Selected tip: How to import a text file with XYZ coordinates to AutoCAD points?

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