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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.

ACADLTACADMADTMDTMap

* CAD

26.8.2004 26015×

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

See also:
Tip 11522:	How to create 3D splines in Fusion 360 - e.g. for pipe axes?
Tip 11295:	Iterative Move, Scale and Rotate - till boundary touch.
Tip 10383:	The shortest path between two points on a network.
Tip 9786:	3D osnaps to planes in point clouds.
Tip 9357:	Intersection of a 3D curve with a 3D surface in AutoCAD.

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