Comment wafersaw SNF 2008-04-18 22:35:31: How to fix align offset error

sjo at snf.stanford.edu sjo at snf.stanford.edu
Fri Apr 18 22:35:32 PDT 2008


I fixed it. This particular problem happens when users confuse modes. When you set "wafer diameter", CIRCULAR mode is set, and the saw wants you to align to the centermost street. When you set "X length and Y length", the RECTANGULAR mode is set. In that mode, the saw wants to be aligned to the frontmost (towards user) cut at the edge of the wafer. If you mix these up, e.g. set the frontmost cut at the center, then the saw is out ow whack with its alignment. The fix is to do the reverse.




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