Grace Company makes metal frames as well as the wood (actually don't know if they still make the wood one) anyway with some of the frames you can decrease the width of it by not adding all of the pieces. For example I've seen frames that are 12 feet but you can purchase the extension to make it 14 feet. I have a Bernina frame and am pretty sure it would support a Gammill machine. Good luck with whatever you decide to do!