Steps for Crafting Natural-Style Wooden Doors

　　What is the manufacturing process for wooden doors? Does “solid wood door” mean that all materials are pure, unprocessed natural wood—no man-made panels are used at all? In other words, every component of a solid wood door is made from solid wood, including the door leaf and side panels, which are crafted from solid wood boards or solid wood finger-jointed boards, with no other type of man-made panel employed. Next, let’s take a look at how wooden doors are made.

　　The process of making a wooden door is actually quite simple. Below, we’ll walk you through it in six steps:

　　1. Coordination with the Carpentry and Material Preparation Department

　　Specifically, coordinate with the Materials Department: hand over the delivery notes, verify the quantity and type of lumber, and inspect the lumber being transferred; any nonconforming items must be returned.

　　2. Layout and positioning using pull-and-drag material

　　Jigging and layout involve taking components that have undergone planing, jointing, and other finishing processes, and, based on the product’s specified dimensions and the design drawings, having the carpenter precisely mark and position each component—such as the locations for mortise-and-tenon joints and slot openings—to ensure absolute accuracy.

　　3. Punching, sawing, cutting boards, and grooving

　　Based on the product specifications and dimensions, positioning is first established for the sawing operation, lines are marked, holes are drilled using a drilling machine, boards are cut with a pull saw, and grooves are routed with a groove-cutting machine. When mortising and tenoning, lines must be scribed on the wood to determine the exact locations for cutting the mortises and tenons. Since woodworking dimensions are typically large, they can be reduced; however, once dimensions are too small, they cannot be increased. When sawing tenons, special attention must be paid to proper line layout—technically referred to as “eating the line” and “yielding the line,” which have distinct meanings and are applied to different parts of the work—in order to ensure that there is sufficient material left for trimming and aligning the tenon and mortise. In fact, both the tenon and mortise require multiple careful adjustments to achieve a precise fit, ensure that the assembled pieces are mutually perpendicular, and guarantee a seamless, tight joint at the tenon connection.

　　4. Resolve problems reasonably

　　According to the master craftsman’s product design, to create rounded corners, a rounding machine is used to round the four corners of the wood. The rounded-corner work must be symmetrical, smooth and seamless, with no chipped corners or tool marks. When machining components such as frame members, face panels, door frames, and door leaves, each piece consists of four wooden frame members: two longer members with tenons for mortise-and-tenon joints are called “large sides,” while the two shorter members with mortises are called “side rebates.” The large sides and side rebates are joined at their corners using dovetail joints to form the frame, after which grooves are cut along each side to receive the panels. These grooves provide space for dimensional changes caused by wood expansion and contraction, preventing the panels from being damaged or warping; in this way, various problems arising from thermal expansion and contraction of wood are effectively addressed.

　　5. Secure according to the specifications of various bent materials.

　　Based on the specifications of each bent part, the parts to be processed must be securely clamped together to ensure uniformity, then positioned and milled with a square groove using a machine.

　　6. Assembly of Product Components and the Complete Unit

　　During the product assembly stage, components and panels must be aligned at a 90-degree angle, with interfaces that are flat and smooth; all four legs must be perfectly level, diagonals must form right angles, and the legs themselves must be as flat as glass. Assembly is carried out in a specific sequence: first, carpenters assemble individual components and sub-assemblies, followed by final full-assembly. The tools used include wooden mallets and clamps, among others.

　　Based on the product’s assembly drawing, the machined parts are assembled into a relatively independent structural component unit. This “assembly” process differs from the “assembly” in modern wooden door manufacturing: it does not simply involve directly joining components to form the final product. Instead, while performing precision machining on the parts, they are also assembled into subassemblies and components. The initial stage of part assembly involves mortising and tenoning, reducing tenon sizes, rough grinding and shaping of irregularly shaped components, and inspecting whether the mortise-and-tenon joints are appropriately sized, tightly fitted, and free from warping or corner lifting. Any defects found must be promptly corrected.

　　Assembly involves combining the components of a wooden door into a complete, functional unit—a task that demands considerable skill and precision. Drawing on their extensive experience and masterful craftsmanship, skilled artisans ensure that every element fits together seamlessly, creating a door that appears as a single, unified whole. Assembly must be carried out on a level, clean surface, as this is an essential requirement for guaranteeing the quality of the final product. There are two main reasons for this: first, even if the door is assembled correctly, placing it on an uneven surface will cause the door to “walk” under its own weight; moreover, assembling on an uneven floor makes it difficult to determine whether the door has been properly aligned. Second, solid-wood doors are quite heavy; when placed on an uneven surface, the load is distributed unevenly across the legs, which can easily lead to warping or deformation of the door. During the actual assembly process, all components should be gathered, arranged in the correct order, and then put together step by step.