I too have a "regular" sewing machine on a quilt frame. As long as I unlock the ratchets at each end of the pole holding the backing, top and batting, and roll carefully, I do not bend or harm the needle. Everything moves freely.
Don't limit yourself to 4" pantographs - challenge yourself with a wider one and do 1/2 on the first pass and the second half on the next pass. I intend to try this with my next quilt!
