Can I mix left-over sand into my soil before planting new grass?

You'd think sand would be a good way to loosen clay soil before planting a new lawn. It can be but only in large quantities. A little bit is usually counter-productive.

Sanding your lawn: why, when & how to do it right - Plantura

Improving Clay Soil

Must Reads: The one gardening mistake you can't afford to make - Los Angeles Times

Screened Topsoil Organic Garden Mix Better Earth Compost, 55% OFF

How to Have a Perfect Lawn

Week 2 Challenge

Restore a Backyard With Dead Soil (Before and After) : 9 Steps (with Pictures) - Instructables

Establishing a New Lawn Using Seed (E2910) - MSU Extension

Kellogg Garden Organics 2 cu. ft. Topper Lawn Soil for Seed and Sod 653 - The Home Depot

Can I Mix Left-over Sand Into My Soil Before Planting New, 59% OFF

Why Your Garden Needs Mulch (Assuming You Do It Right) - The New York Times

3 Steps to Take Before Planting Grass

Preparation for Turfing or Sowing Grass Seed