Quilting Frames are gaining in popularity to use with the HD9 / 1600P.
 
The set is specifically designed to support this and the set consist of two feet:-
 
1/4" Ruler Foot - has a 1/4" diameter and a high heel at the back and is designed to accommodate the use of the 1/4" thick rulers.
 
Open Toe Frame Quilting Set - the opening on this foot faces sideways so as to face the quilter at the handles of the frame.