Square Feet are designed to aid in achieving straight seams while piecing on your quilting frame. These feet can be used as a guide for consistent seam allowances of 1/4″ and 1/2″. The 1/4-inch Square Foot is great for cotton fabrics, the 1/2-inch Square Foot is best for cuddle type fabric and high loft batting.
Your machine should already be fitted with the Handi Feet mount that works with the interchangeable Handi Feet. HQ longarm machines manufactured prior to Fall 2014, will need to convert from the original hopping foot to the Handi Feet mount using the Handi Feet Conversion Kit (QM00841).