RTM engine engineering (Resin Transfer Molding) is aimed to improve the quality of composite materials research in the environment Pratama Mulia Polytechnic Surakarta. Activities of this RTM engine engineering include: Planning, manufacturing, and testing of machinery. making a printing machine with a vacuum method. Material construction machine using steel elbow 50x50 mm, Motor vacuum using Ve280n model with 110-220V / 50-60Hz power 1 HP, Mold using material Allumunium 350 x 350 x 50 mm. After doing the testing machine, it was found that the RTM machine can be used to print fiber-reinforced polyester resin composite with a size of 200 x 200 x 3.2 mm.