How can you stretch an acrylic sweater by putting it in the dryer. Should that be on cold warm or hot setting please?

To stretch an acrylic sweater using a dryer, first dampen the sweater slightly by misting it with water. Then, place it in the dryer on a low heat or warm setting, as high heat can damage the fabric. Monitor the sweater closely to ensure it stretches to the desired size without becoming too dry or felted. Once it reaches the desired stretch, remove it promptly and lay it flat to dry.