I needed a 1:24 Eames chair for a project, but was in a hurry. I did some quick and dirty modeling based on existing CAD files of the chair, and formatted it for support-less printing. The overhangs are 5-10 degrees over the optimal 45 in some areas, but printed fine for me on a Rep2.
Print both pieces without rafts or support material. There are several manual support contacts you may wish to cut away with an exacto knife. Glue base and chair together - look up a reference photo online, the base sits farther back than you think.