Don, some crushed stone is much more compactable than sand and would make a more stable base for that patio. You can still use sand on top of the crushed stone and to lock the pavers together, but crushed stone is the best. That's what is used to build highways, roads and runways. Compact it with a vibratamp once it's graded properly and you're golden.

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OBK #55

1998 Lincoln Continental - Sold
Max 1984 300TD 285,000 miles - Sold
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2016 AMG GTS 12,000 miles