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General Mach Discussion / cutting out of line with the toolpath

« on: July 09, 2010, 08:50:09 AM »

  I am cutting a design out of 3/16 aluminum in 3 passes.  It is a rather intricate design with lots of negative spaces within a circular format about 8 inches in diameter. The first test went beautifully...looking at the piece sideways you could not even tell where the first pass ended and the second started.  Now There is a slight step effect caused by the second and third passes not being exactly in line with the first pass.  The final outer circular path is way off..(about a quarter inch)...somebody please help! I have 80 to go and have only been able to do one!