Why do holes become arcs in 2D drawing? (#523) - 2D Drafting

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Why do holes become arcs in 2D drawing? (#523)

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orlandosardaro		#1 Posted : Tuesday, September 25, 2007 3:47:06 PM(UTC)
Rank: Senior Member Joined: 3/1/2007(UTC) Posts: 35		1. Draw a part that contains holes. 2. Create a 2D drawing. 3. In the view perpendicular to the holes, click the 'circles'. You will see that what should be circles now have become 2 180 arcs. CAM machines really don't like that. Why is that, is it an ACIS thing, or something development can change?
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JoeM		#2 Posted : Wednesday, September 26, 2007 6:15:18 AM(UTC)
Rank: Junior Member Joined: 4/11/2007(UTC) Posts: 12		This is interesting. I know that TurboCad has the same issue with its 2D drawing generation. However, I have not had any trouble with laser or waterjet cutting patterns that have two arcs (with coincident ends) instead of a circle.


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jol		#3 Posted : Saturday, December 22, 2007 11:56:09 AM(UTC)
Rank: Senior Member Joined: 2/26/2007(UTC) Posts: 2,156 Was thanked: 1 time(s) in 1 post(s)		no problems here cutting 2 curves instead of a circle - but it's an interesting question !


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