G41 alarms for interference on the lead-in. The CAM arc is 2 mm and the tool is 16 mm diameter. Wear is negative by 0.3 mm. The same program runs with wear at zero.
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Negative wear makes the control treat the tool as larger. A 2 mm lead-in is not enough for a 16 mm tool plus wear. Lengthen the lead-in in CAM or reduce how much negative wear you apply. The alarm is the control protecting the part.
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Zero wear running fine tells you the geometry is only legal for the nominal tool. Do not turn compensation off to silence the alarm. You will cut the path as a centerline.
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Repost the lead-in bigger than the radius you will ever comp. This alarm will return on the next tight profile.
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Questions and answers were written on this account when they were published.
