How to make solid door handles？

The most important thing in making a solid door handle is the casting process. 

We are a professional hardware manufactory in China ,and specialized in precision machining, investment casting and stamping for various of lock hardware. specialized in all kinds of Door Handle, Door Escutcheon, Door strike Plate ,Door Latch Bolt, Door Lock Cylinder, Door Lock Body, Door Lock Accessories, Door Lock Pivot, Escutcheon.