Ready for the final steps for how to make a doorknob? Earlier, we walked through how forged brass is created—the go-to material for most door knobs—and the step-by-step forging process that shapes it. Now that the rough shape of the knob is formed, it’s time to look at what happens next. The preparation and finishing stages are where the real transformation begins, turning that raw brass shape into a sleek, functional, ready-to-install doorknob.
Drilling and Tapping: The First Steps After Forging
Once the knob comes out of the forging process, it moves into a series of machining steps. These are all about refining the shape and adding the functional details that make a doorknob… well, a doorknob.
Drilling is exactly what it sounds like—using drill bits to create or enlarge holes needed for assembly. This step ensures that the internal parts fit together smoothly and securely. Tapping comes next, and this one’s a little more technical. Tapping involves cutting threads into those drilled holes using a tool called, predictably, a tap. These threads allow the internal components to screw together properly so the knob operates the way it should.
Breaking Down the Basic Parts of a Doorknob
Before going deeper, it helps to understand the main components you’ll see in most traditional knob hardware. The basic parts include:
- The knob top – the part you actually grab and turn
- The rose – the round plate that sits flush against the surface of the door
- The shank – the stem extending from the knob, connecting it to the internal mechanism
- The spindle – the metal shaft that rotates to operate the latch
If you’re a visual learner like me, seeing a diagram makes everything click. When I first researched this, the diagram showing each piece was extremely helpful—especially for understanding how they all fit together.
How the Components Connect (Sung to the Tune of “Dem Bones,” If You Dare)
Once you get a look at the parts, it all starts to make sense. The rose attaches to the door and supports the hardware. The shank extends from the knob and contains a socket that links to the spindle. The spindle, in turn, connects to the latch and makes the entire mechanism function. Honestly, the whole thing reminds me of a door-hardware version of “Dry Bones.”
The knob connects to the shank, the shank connects to the rose, the rose connects to the spindle…
Okay, maybe it needs some workshopping. But now you won’t forget how those parts relate, though you might be humming that tune all day, and for that, I apologize in advance.
Buffing: Where the Shine Comes From
After drilling and tapping, the hardware isn’t quite ready for its close-up. Several buffing stages are used to smooth out imperfections and give the brass that brilliant, polished finish we all expect. Buffing brings out the shine, removes rough edges, and preps the surface for its final protective layer.
Coating: Protecting and Perfecting the Finish
Once the hardware is polished, it moves into the coating process. This step is essential, not only for the look of the hardware but also for its durability. Traditionally, manufacturers have used organic coatings, but these can produce hazardous fumes and sometimes lead to inconsistent results. Because of that, many companies are shifting to inorganic coating methods, which are safer and provide a more reliable finish.
One of the most advanced coating processes is PVD (Physical Vapor Deposition). If you want the most durable finish possible—especially for exterior door hardware—PVD is hard to beat.
Here’s how it works:
- The hardware is placed inside an airtight chamber.
- The chamber is vacuum-sealed using a series of pumps.
- Coating materials are vaporized and deposited onto the brass—literally one molecule at a time.
Pretty wild, right? Before PVD can be applied, the surface must be thoroughly cleaned using washing tanks and agitation systems, followed by electroplating with semi-precious metals. Only then is the hardware ready for that ultra-durable PVD finish.
The Craft Behind Every Door Knob
By the time a doorknob reaches your front door, it’s already gone through a surprising number of steps—shaping, drilling, tapping, buffing, coating, and plenty of quality checks along the way. From the forged brass beginnings to the ultra-durable PVD finish, each stage is designed to make sure your hardware not only looks great but also stands up to years of everyday use.
Understanding how to make a doorknob makes it easier to appreciate the craftsmanship behind even the simplest door knobs. And if you ever find yourself wondering which finish, material, or grade is right for your home, we’re always here to help you choose the perfect door hardware for your project.
