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80mm jump on layer 3 causing "waves on the ocean".

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Posted · 80mm jump on layer 3 causing "waves on the ocean".

Somethng has changed in my setup and can't figure out what. Im using Cura 4.7.1 and printing on a Ender 3 Pro with PLA @ 215 /65c, 20mm/s and 100% flow and everything has been working perfectly.  The first and second layers are spot on.   Then for layer 3, the Z jumps from .38mm layer height to 1.18mm.  I can figure out why.  Day before yesterday everything was fine, but this started yesterday and continues on to today.  I have looked all through the cura profile and I can't see anything that I can pin this on.  I don't doubt that I may have accidentally changed something but I don't know what.   


Can anybody give me an idea of where to look?   BTW, if I use  brim instead of a raft, layer three seems to come up just fine.  It's only the raft that is screwing up.


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