Manufacturing Learning Center
Practical guides for 3D printing, CNC machining, CAD modeling, and design for manufacturability—plus selected updates from the evolving world of advanced manufacturing.
Digital Engineering & Reverse Engineering
Reverse engineering starts with a physical object, rather than a drawing, and works backward to produce usable digital data. That might mean recreating a legacy part that has no surviving CAD file, capturing a design from a competitor's product for comparison, or digitizing a handmade prototype so it can be refined and manufactured at scale.
The process typically begins with 3D scanning, which captures the physical geometry of a part as a dense point cloud or mesh using structured light or laser scanning hardware. That raw scan data is accurate, but it is not yet a usable engineering file. Turning it into one requires CAD reconstruction: rebuilding the part as clean, editable surfaces and solids that a designer can actually modify, one that respects the part's true dimensions and design intent rather than just tracing its outer shape.
Reverse engineering is often paired with inspection work. Comparing a finished part's scan data against its original design, or against a reference part, quickly reveals warping, wear, or manufacturing drift that would be difficult to catch with manual measurement alone. This kind of dimensional comparison is useful both for quality checks on new production runs and for understanding how a part has changed after years of use.
Because the output is a working CAD model rather than just a visual reference, digital engineering makes it possible to modify, repair, or manufacture a part that started out as nothing more than a physical object in hand.
3D Printing & Rapid Prototyping
3D printing, also called additive manufacturing, builds a part layer by layer directly from a digital model, rather than cutting material away from a solid block. That makes it well suited to early stage prototypes, complex geometries that would be difficult to machine, and low volume parts where tooling would be hard to justify.
Several processes are common in industry today. FDM, or fused deposition modeling, extrudes melted plastic filament through a nozzle and is generally the fastest and most economical option for form and fit testing. SLA, or stereolithography, cures liquid resin with light to produce smooth, highly detailed parts, which makes it a good fit for visual models and fine featured components. SLS, or selective laser sintering, fuses powdered material with a laser and produces strong, functional parts without the need for support structures.
Material choice depends heavily on what the part needs to do. Standard PLA is inexpensive and easy to print, and works well for early concept models. Engineering grade materials, including nylon and carbon fiber infused composites, offer higher strength, stiffness, and heat resistance, which makes them suitable for functional prototypes that need to survive real handling and testing, not just look the part.
Because a print can go from file to physical object in hours, 3D printing is often used alongside design work itself, letting a team hold a part in their hands and catch fit or ergonomic issues before committing to production tooling or a CNC run.
Design for Manufacturability: 7 Checks Before You Quote
Design for manufacturability, often shortened to DFM, means shaping a part's geometry around how it will actually be built, rather than adjusting for manufacturing constraints after a design is finished. Parts that follow DFM principles are typically faster to produce, less expensive, and more consistent from run to run.
For machined parts, a few habits go a long way. Deep, narrow pockets take longer to cut and are harder to hold to tight tolerances, so opening up internal corners with a generous radius, matched to an available tool size, keeps cycle times down. Wall thickness matters too: walls that are too thin can flex during cutting or warp afterward, while unnecessarily thick sections simply add material and machining time without adding function.
For 3D printed parts, overhangs and unsupported spans behave differently depending on the process, so orienting a model to minimize support material can reduce both print time and post processing. Draft angles, small tapers added to vertical walls, make a part easier to remove from a mold and are worth considering even outside of traditional molding.
Tolerances deserve special attention. Calling out a tight tolerance only where a part truly needs it, and leaving standard tolerances everywhere else, keeps a project on schedule and on budget. Involving manufacturing expertise during the design phase, rather than after drawings are finalized, is one of the simplest ways to catch these issues early.
CNC Machining & Precision Manufacturing
CNC machining removes material from a block of stock using a computer controlled cutting tool to produce a finished part. Because the tool path is programmed digitally, CNC processes can hold tight, repeatable tolerances across a production run, which makes machining a common choice for functional parts, fixtures, and finished components across industries.
Two configurations cover most of the work: milling, where a rotating cutter moves across a stationary part, and turning, where the part itself rotates against a stationary cutting tool. Multi axis machining, including 5 axis setups, lets the cutting tool approach a part from several angles in a single setup, which reduces how many times a part needs to be repositioned and helps preserve accuracy on complex geometries. Swiss turning is a specialized turning process built for small, high precision parts, often used for medical, electronic, and fastener components.
Material selection shapes how a part is machined. Aluminum cuts quickly and is a common choice for lightweight structural parts. Stainless steel and other alloys machine more slowly but offer greater strength, corrosion resistance, or heat tolerance. Engineering plastics are also machined for parts that need to be lightweight, electrically insulating, or chemically resistant.
For teams moving a design toward production, the earlier machining is considered, the fewer surprises show up later. Features like deep pockets, thin walls, or tight internal corners all affect how a part is held, cut, and finished, so it helps to loop manufacturing in as early as possible.
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