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you should find a casting surface to machine out as the reference surface at first. then seting your program to match the machining surface as ZERO locaton. Hope it is make sense.

Leon Qin
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Dear Rober,

Is it possilbe that you buy the parts from China. we are professional in machining casting parts. I can send NDA to you for get your FFQ package if you can agree.
many thanks !
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