Carpentry and Joinery Industry Terminology

Adhesive (PVA)

Standard polyvinyl acetate wood glue for interior joinery; strong, easy cleanup, thermoplastic.

Edge-glue maple panels; Clamp for 30–60 minutes before handling; Avoid exterior exposure or high heat where creep can occur.


Architectural Woodwork Institute (AWI)

Industry body issuing standards and certification for architectural woodwork.

Build casework to AWI Architectural Woodwork Standards (AWS); Enroll project in AWI Quality Certification Program (QCP); Reference AWI tolerances in contracts.


Band saw

Stationary saw with a continuous blade for curves, resawing, and roughing out.

Resaw veneers from 8 in boards; Cut chair templates; Rip rough stock before jointing.


Bill of Materials (BOM)

Structured list of parts, materials, hardware, and quantities for a build.

Generate BOM from CAD to drive purchasing; Update BOM after a change order; Use BOM to track yield and waste.


Board foot

Volume unit for rough lumber equal to 144 cubic inches (1 in × 12 in × 12 in).

Price cherry at 6 dollars per board foot; Calculate yield from 100 board feet of oak; Convert metric sizes to board feet for ordering.


Carcass

The cabinet box or structural shell of a case good.

Dado shelves into the carcass sides; Build carcasses from plywood for screw-holding; Check carcass for square before installing backs.


Change order

Formal document that modifies scope, price, or schedule after contract award.

Issue a change order for added drawers; Adjust lead time and BOM costs; No work starts without a signed CO.


CNC (Computer Numerical Control)

Computer-driven routers and mills for precise cutting, drilling, and shaping.

Nest cabinet parts and post G-code; Machine 32 mm system holes; Cut complex joinery and pockets repeatably.


Countersink

Conical recess allowing screw heads to sit flush or below the surface.

Countersink #8 wood screws at 82 degrees; Prevent splitting with a pilot hole; Plug countersunk holes for a clean look.


Dado

A groove cut across the grain to receive a shelf or panel.

Dado fixed shelves into sides for strength; Use a dado stack on the table saw; Fit a 3/4 in shelf to a 23/32 in plywood dado.


Datum/Reference Face

The primary face and edge used to register tools and measurements to avoid cumulative error.

Mark a reference face and edge on rough stock; Always keep the datum against the fence; Flip only around the datum to maintain parallelism.


Dovetail

Interlocking trapezoidal joint known for mechanical strength and aesthetics.

Half-blind dovetail drawer fronts; Through dovetails on a case; Cut by hand or with a router jig.


Dust collection

System to capture chips and fine dust for safety, cleanliness, and equipment life.

Size ducting to maintain adequate CFM; Use a riving knife and overarm guard with collection; Upgrade to HEPA filtration for finishing rooms.


EMC (Equilibrium Moisture Content)

Moisture level wood reaches when balanced with ambient humidity and temperature.

Acclimate stock to 6–8 percent EMC before milling; Design for movement based on local EMC; Verify EMC with a moisture meter and psychrometric chart.


Estimate

Pre-contract cost and time forecast based on scope, quantities, rates, and risk.

Create an estimate from plan takeoffs; Include labor, materials, overhead, and profit; Convert estimate to bid with terms and exclusions.


Euro hinge (Cup hinge)

Concealed 35 mm cup hinges with three-way adjustments for overlay or inset doors.

Bore 35 mm cups at 13 mm depth; Set reveal with cam adjustments; Specify soft-close clips.


Face frame

Front frame attached to a cabinet carcass, forming openings and stiffening the box.

Pocket-screw face frames to carcasses; Choose frameless vs face-frame construction; Inset doors require precise face-frame squareness.


Finish (Lacquer/Polyurethane)

Protective and decorative film coats; lacquers dry fast, polyurethanes are durable.

Build a finish schedule with dye, sealer, topcoat; Spray pre-cat lacquer with HVLP; Use wipe-on poly for hand-finished pieces.


Grain direction

Orientation of wood fibers affecting strength, machining, and appearance.

Plane and joint with the grain to avoid tear-out; Align grain in rails and stiles for stability; Match veneer grain for aesthetics.


High-Pressure Laminate (HPL)

Resin-impregnated paper sheets pressed under heat and pressure for durable surfaces.

Laminate countertops and casework; Use a balancing backer on panels; Bond with contact adhesive or PVA for postforming lines.


Jig

Custom aid that guides tools to make operations accurate, safe, and repeatable.

Shelf-pin drilling jig at 32 mm spacing; Spline-cutting jig for miters; Tenoning jig on the table saw.


Jointer

Machine that flattens faces and squares edges, creating datum surfaces.

Joint a straight reference edge before ripping; Flatten a bowed face prior to planing; Use push blocks and proper guard.


Kerf

Width of material removed by a saw blade or cutter; impacts sizing and yield.

Account for 1/8 in kerf in cut lists; Choose thin-kerf blades for low-power saws; Create kerf bends for gentle curves.


Kickback

Sudden ejection of a workpiece caused by binding or improper feed; major hazard.

Prevent kickback with a riving knife and proper fence alignment; Use push sticks and featherboards; Stand out of the line of fire.


Lead time

Elapsed time from order to delivery or completion; critical for scheduling.

Hardware has 6-week lead time; Identify long-lead items early; Build buffers into the schedule.


MDF (Medium-Density Fiberboard)

Engineered panel made of wood fibers and resin; smooth, stable, and paint-grade.

Use MDF for painted doors and panels; Pre-drill to avoid screw blowout; Wear protection for fine sanding dust.


Moisture meter

Instrument to measure wood moisture content; pin and pinless types.

Confirm 8 percent MC before glue-up; Calibrate for species; Record MC for QA documentation.


Mortise and Tenon

Classic frame joint with a projecting tenon fitting a matching mortise; strong and durable.

Haunched tenon for narrow rails; Drawbore and pin M and T joints; Use loose tenons with a dedicated tool.


OSHA

US agency setting and enforcing workplace safety standards.

Comply with OSHA 1910 woodworking machine guarding; Maintain injury and illness logs; Train employees on hazard communication.


Overhead

Indirect business costs not tied to a specific job, such as rent, utilities, admin, and insurance.

Apply an overhead rate to labor in estimates; Distinguish overhead from direct job costs; Recover overhead in pricing and markup.


PPE (Personal Protective Equipment)

Equipment that reduces exposure to hazards like dust, noise, and flying debris.

Wear eye and hearing protection at saws; Use N95 or P100 respirators when sanding; Choose cut-resistant gloves for sheet handling.


Plywood

Engineered panel of cross-laminated veneers; strong, stable, and versatile.

Build carcasses from Baltic birch; Apply edge-banding to exposed edges; Choose veneer grades to meet spec.


Purchase Order (PO)

Buyer-issued document authorizing a purchase with quantities, prices, and terms.

Issue a PO to the lumber supplier; Match invoices to POs; Reference PO numbers on packing slips.


QA/QC (Quality Assurance/Quality Control)

Planned system and activities to prevent defects and verify conformance.

QA defines inspection points and checklists; QC measures reveals and tolerances; Log nonconformances and corrective actions.


Quarter-sawn

Lumber sawn with growth rings roughly perpendicular to the face; stable with distinctive ray fleck in some species.

Specify quarter-sawn white oak for doors; Reduce cupping and shrinkage; Use for rails and stiles.


Rabbet

A rectangular recess cut along an edge to accept a mating piece or panel.

Rabbet case backs; Create a rabbeted glass stop; Cut rabbets with a router and bearing-guided bit.


RFI (Request for Information)

Formal question to clarify drawings, specs, or site conditions during a project.

Submit an RFI on hinge overlay requirements; Update shop drawings per RFI response; Track RFIs in a project log.


Riving knife

Thin plate behind a table saw blade that keeps the kerf from closing and reduces kickback.

Keep the riving knife aligned with the blade; Use with a crown guard where practical; Do not remove it for through-rips.


Router

Handheld or table-mounted motor with bits for profiling, joinery, and shaping.

Rout dados with a guide rail; Cut a roundover on edges; Use a template and pattern bit for duplicates.


Scope of Work (SOW)

Contractual document defining deliverables, materials, finishes, and responsibilities.

List the millwork package in the SOW; Include clarifications and exclusions; Use the SOW to control scope creep.


SDS (Safety Data Sheet)

Standardized document that details hazards, handling, and PPE for chemicals.

Keep SDS for finishes and adhesives accessible; Train workers on SDS sections; Update SDS library annually.


Shop drawings

Detailed fabrication drawings used for approval and production.

Submit shop drawings for architect review; Coordinate site conditions and field dimensions; Revise drawings per RFIs and change orders.


Submittals

Package of documents and samples demonstrating compliance with specs.

Provide finish samples and hardware cut sheets; Track submittal status in a log; Obtain approvals before procurement.


Takeoff

Process of quantifying materials and labor from drawings and specs.

Perform a digital takeoff of cabinets and panels; Count hinges and slides from hardware schedules; Use takeoffs to build the estimate and BOM.


Tolerance

Permissible variation from nominal dimensions or conditions.

Build to AWI tolerances of ±1/32 inch on casework; Specify reveal tolerances on doors; Gauge actuals against tolerance bands in QC.


Veneer

Thin wood slices bonded to a substrate for appearance and stability.

Bookmatch veneers on panels; Balance with a backer veneer; Press in a vacuum bag or hot press.


VOC (Volatile Organic Compounds)

Solvent emissions that affect air quality and worker health; regulated in finishes and adhesives.

Specify low-VOC coatings; Verify compliance with local limits; Improve ventilation when applying finishes.


WIP (Work in Progress)

Partially completed work and its value on the shop floor.

Track WIP to manage flow and cash; Limit WIP to reduce lead time; Reconcile WIP in monthly financials.


Wood movement

Dimensional change of wood across the grain as moisture content changes.

Allow expansion gaps in panel grooves; Use slotted screw holes for tabletops; Choose quarter-sawn stock for stability.


Z-clip

Interlocking aluminum clip system used to hang panels and fixtures flush to walls.

Mount wall panels with Z-clips for removability; Align clips to maintain reveals; Use structural screws into studs or blocking.


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