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You need to post up way more information and specific details ( grade/ thickness of material, process, etc.) being used just to even come close to being able to formulate any relevant suggestions to guide you...
Understand that we are not mind readers in here and whatever recommendations, or suggestions posted as a reply are simply that and NOT legally binding in any way... All we can do is to possibly giude you in the right or alternative direction...
Respectfully,
Henry