Perbandingan Sifat Mekanik: Tarik, Tekan, dan Lentur Komposit Sandwich dengan Inti Honeycomb Polipropilen dengan Kulit Epoksi/Serat Karbon Terhadap teknik Fabrikasi Cold-Press Adhesive dan VARI = Comparison of Mechanical Properties: Tensile, Compress, and Bending of Sandwich Composite with Polypropylene Honeycomb as Core and Epoxy/Carbon Fiber as Skin with Cold-Press Adhesive and VARI Fabrication Technique