Many sit-down longarms can be put on a frame, but I've learned from listening to the experiences of others that it is much better to get a frame that was built for your machine than to try to make another one work. You would need a carriage for the Tiara to ride on, and that would need to fit both the frame and the Tiara. The hand quilting frame is not built to withstand the vibration, or the weight, of a high speed sewing machine. These beautiful Hinterberg frames are in demand by hand quilters, so you might be able to sell that frame and put the money toward one that is meant for your Tiara. (I would check with the dealer before doing anything.)