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Dear colleagues</div>


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We are going to buy an RIE/PECVD system. Some vendors offer one-piece aluminum chambers while others offer welded stainless steel.</div>


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I understand that one-piece metal is good for keeping the vacuum, but which is more important (one-piece aluminum vs. welded stainless steel), if we have to choose one configuration?</div>


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Any suggestions and insights are highly welcome.</div>


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Shane</div>


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