New best Longarm Friend here. If you 'float' your quilt top.. you'll love this... and perhaps I'm the last to know of this use of something designed for another purpose. Meet an 18" magnetic bar designed for storing metal knives and tools. Such a bar would normally be screwed onto a wall with tools/knives added/removed as needed. In the case of a longarm quilter floating a quilt top and batting at the top 'belly' bar ... 4 or 5 of these bars applied atop the quilt top along the belly bar should hold your top nice and secure. One caution... these are mighty strong magnetic bars that should you ever allow them to connect to each other might keep you from getting them apart.