Guitars can be sensitive instruments, especially when it comes to the finish. Keeping your guitar in a case generally protects the guitar quite well, but if the case does not have a soft lining material, the finish can become scratched or damaged. You can add a soft lining to a guitar case you have built yourself or even to one that does not currently have a lining. Choosing the color and type of the material lets you customize the case even more to your liking.
Lay the velvet fabric inside the case and use the utility knife to cut a piece for the bottom of the case. Trace around the edges of the case for a more exact fit.
Lay the foam padding inside the case and use the utility knife to trace around the edge of the case to cut a piece for the bottom. If you do not wish to add padding, you can skip this step.
Lay the velvet fabric against the sides of the case and cut pieces to fit, but leave an extra inch for the top edge so that it can overlap the foam padding.
Lay the foam padding against the sides of the case and cut pieces to fit.
Spray a thin layer of spray adhesive or contact cement on the inside bottom of the case, then press the foam padding into place.
Spray a thin layer of spray adhesive on the foam padding and press the velvet fabric into place, covering the foam padding.
Spray a thin layer of adhesive on the foam padding pieces for the sides, then press the velvet material for the sides against it, overlapping the top of the foam slightly. Allow the sides to dry.
Spray the back of the assembled side pieces, then press them against the inside sides of the case so that the overlapped velvet material faces up. This creates a more finished appearance.