Materials and Manufacturing Processes
How products are made: the four material families, and the processes that form, separate, fabricate, condition and finish them.
Foundations
Additive Manufacturing Process Families
Identify an additive process by what it places, what joins the material, and what the part still needs after the build.
Design for Manufacturing
Make the required function easier to produce, assemble, inspect and maintain.
Manufacturing Cost and Volume
Estimate unit cost and find where two production methods cost the same.
Manufacturing Process Categories
Classify an operation by its main purpose: separating, forming, fabricating, conditioning or finishing.
Material Families
Compare exactly four families: Metals, Plastics (polymers), Wood & Composites, and Ceramics & Glass.
Material Properties
Distinguish strength, stiffness, hardness and toughness, then compare physical and chemical behavior, cost and workability.
Material Utilization and Cost
Check a stock layout, account for cutting loss and roll up material costs.
Outsourcing
Decide which activities to keep in-house or place with suppliers, weighing relevant costs and capabilities alongside quality, capacity and delivery.
Powder Bed Fusion in Polymers and Metals
Follow the shared powder-layer cycle, then distinguish polymer SLS and MJF from stated metal laser and electron-beam routes.
What Is Manufacturing?
Turn materials into useful products by choosing processes that fit the material, quantity, cost and required quality.
Plastics
Choosing a Plastic Forming Process
Use geometry, material, quantity and tooling cost to narrow the process choice, then estimate cost per part and production rate.
Conditioning and Finishing Plastics
Separate property changes from surface treatments, and match annealing, smoothing and coatings to the exact plastic.
Cutting and Machining Plastics
Choose a separating process for the plastic and the feature, then control heat, chips and edge damage.
FDM 3D Printing
Read an FDM part as deposited roads and layers, then choose orientation, walls, infill and supports for its job.
Joining Plastics
Match solvent cement, adhesive, welding or mechanical joints to the plastic pair, load and need for disassembly.
Plastic Forming Processes
How eight plastic and composite processes shape material, what they can make, and where tooling and geometry limit the choice.
Plastics as Materials
Polymer chains, thermoplastics and thermosets, common plastics, and what resin identification codes actually tell you.
Composites
Wood
Bending and Laminating Wood
Compare steam bending, kerf bending, bent lamination and veneering by what changes shape and what holds the result.
Buying Lumber and Board Feet
Separate sales size from measured size and calculate board footage using an explicit dimension convention.
Choosing a Woodworking Machine
Start with the required cut, surface or hole, then match the machine and cutter to that result.
Drying and Conditioning Wood
Compare drying methods, prepare stock for its service environment and calculate moisture content on an oven-dry basis.
Engineered Wood Products
Compare veneers, strands, particles, fibers, and laminations to choose a wood product for its intended use.
Gluing and Clamping Wood
Match the adhesive to the fit and exposure, then prepare the surfaces and hold the assembly through the specified cure.
Grain and Moisture Movement
Connect grain orientation and moisture changes to board movement, defects, and design choices.
How Saws Cut Wood
Match teeth to grain direction, leave room for chips, and include the saw's kerf in every cutting layout.
Milling Rough Lumber Square
Establish one flat face and one square edge before making the opposite surfaces parallel and cutting to length.
Preparing and Finishing Wood
Prepare a uniform surface, distinguish color from protection and choose a finish for appearance, wear and repair.
Wood Joinery and Fasteners
Choose joints and fasteners by the load, glue surfaces, assembly access and movement the connection must allow.
Wood Structure and Species
Read tree structure, distinguish botanical groups, and choose species for their properties rather than their names.
Metals
Fasteners and Galvanic Corrosion
Choose mechanical joints for service access, thread compatibility and exposure to moisture and dissimilar metals.
Forming Metal
Compare casting, bulk deformation, sheet forming and powder metallurgy by shape, material, tooling and production quantity.
Heat Treating Metals
Choose a conditioning process by its goal: soften, refine structure, harden, improve toughness or reduce residual stress.
Joining Metal
Compare welding, brazing, soldering and mechanical assembly by joint access, heat input, production needs and service requirements.
Metal Stock Forms and Purchasing
Recognize stock shapes, distinguish size conventions, and specify enough information to receive the metal a design requires.
Metals and Their Properties
How bonding, grains and alloy condition affect the properties used to choose a metal.
Nonferrous Metals
Aluminum, copper alloys, titanium, zinc and magnesium as choices for weight, conductivity, corrosion and manufacturing needs.
Types of Steel
Carbon, alloy, stainless and tool steels, plus the difference between a steel family and a complete material specification.
Manufacturing Documentation
Bills of Materials
List the parts in an assembly and estimate each part's material share without confusing stock purchases with per-part consumption.
Critical Dimensions for the Shop
Choose dimensions from fit, function and interfaces, then give the maker and inspector the same references and limits.
Making Silicone Molds from a Printed Pattern
Plan a one-part mold, document the product-specific mixing and curing conditions, and inspect a repeatable batch of castings.
Operation Method Sheets
Turn a drawing into an ordered plan with equipment, setup, process settings and a check that proves each operation is complete.