1. In this process the material for the core and face sheet is the same. 2. There is also a risk of melting the face sheets . 3. For in-situ bonded face sheets the core is closed-cell foam. 4. A foamable precursor is expanded between two face sheets . 5. It is a " honeycomb core surrounded by a carbon fiber face sheet plies ." 6. This sandwich-compact assembly goes through several rolling steps to attain desired precursor and face sheet thickness. 7. Face sheets are chosen from a variety of aluminium alloy, and other metals such as steel.8. The outer structure was made of stainless steel brazed honeycomb brazed between steel alloy face sheets . 9. When the liquid foam comes in contact with the solid face sheets a metallic bond is established. 10. The last time the Angels faced Sheets was the final spring-training game in Arizona on March 28.