It works best if it is a table that you can cut a hole in to set the machine down in. Then there needs to be somekind of additional surface for the machine to rest on. Since most machines these days are freearm they all need somekind of either table or slide on extension. I purchased a typical office folding table from Stapels. My husband the machinist cut the legs down for me so that it is I believe 27". When I slide my clear plexiglass extension table on it it is the perfect height for my arms to be perpendicular. I also have a tilt table under my machine and the add on thing is also tilted. I have chronic neck, back and muscle in general problems so being as ergonomic as possible is a necessity. The three items, the table, the tilt table which can be duplicated just by putting doorstops under the back of the machine and the plexiglass extension together probably cost a lot less than a custom sewing cabinet. The nice thing about the clear extension is that I can keep things under it, they are out of the way but always visible. I don't usually machine quilt anything bigger than twin size. Since my usual sewing table is shorter I simply put another similar table whose legs have not been cut down behind or next to my sewing set up. It's original height is then level with my extension table giving me a lot of area to support a bigger quilt. I do this sometimes just to sew the binding on a queen size or larger quilt.