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<p>[QUOTE=&quot;Publius2, post: 25227139, member: 105571&quot;]Easy.&nbsp; Create a vacuum with slab inside the chamber.&nbsp; Leave it in the vacuum until the pressure stabilizes, ie, same inside the slab as in the vacuum chamber.&nbsp; Then flood the chamber with your toning gas to a slightly positive pressure.&nbsp; The vacuum inside the slab will draw the toning gas into the slab.</p><p><br /></p><p>How long for each step is a matter of guesswork and experimentation.&nbsp; How to create a vacuum is simple especially if you have friend who is a AC/refrigeration tech.&nbsp; You dont need a deep vacuum anyway.&nbsp; There are other ways to create a vacuum but I&#039;ll leave that up to the curious to do their own research.</p><p><br /></p><p>I&#039;m not divulging any deep, dark secrets here.&nbsp; This is simple engineering and tinkering knowledge[/QUOTE]</p><p><br /></p>

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