This intricate Gadget quilt uses vertical rows of equilateral triangles to create an optical illusion of a floating 3D cube. No Y-seams, hand piecing or multiple mirror image pieces. Material requirements include: 1 yd light color; 1 yd medium tone; 1 yd dark tone; 3/4 yd light color; 3/4 yd medium color; 3/4 yd dark color; 4 yds background fabric. 'Gadget' quilt pattern by Ruth Ann Berry of Fabric Therapy and The Quilter's Clinic. Finished size is about 80" x 80".