Sheet metal fabrication services
A sheet metal model must connect the final formed shape to the material and flat-development basis. Share the controlled formed model and flat definition, drawing revision, material specification and product form, thickness or gauge designation and actual thickness, temper or condition, grain or rolling direction when controlled, outside profile and cut features, edge condition, each bend radius, angle and direction, flange, return, hem or offset dimensions, bend allowance, bend deduction, K-factor or bend-table basis when controlled, reliefs, hardware, joints and mating interfaces, weld, finish and masking requirements, formed-state inspection, datums and acceptance criteria, quantity, and timing so process, sequence, measurement, and fulfillment fit can be confirmed before acceptance.
Capability review
This page describes common request types. Available processes, equipment, tolerances, inspection, documentation, and fulfillment are confirmed for each quote.
Overview
A flat pattern is a manufacturing definition derived from the formed shape, sheet thickness, inside bend radii and angles, and the stated bend-development method. Bend allowance, bend deduction, K-factor, and a bend table are alternative ways to define or calculate developed length; one should not be assumed from a model without knowing which definition controls. During bending, material stretches on the outside and compresses on the inside, while material properties, thickness variation, grain direction, bend orientation, springback, tooling contact, flange length, nearby features, and sequence can affect the released shape. Holes, slots, tabs, notches, bend and corner reliefs, seams, hardware, welds, finish build, and masking can also change forming, access, fit, and inspection. The request should tie the flat and formed files, cut and edge features, every bend and flange, mating interfaces, downstream operations, measurement condition, and acceptance criteria to one drawing revision. These inputs support project-specific review; they do not establish a cutting or forming method, universal bend value, achieved geometry, burr condition, installed hardware, weld or finish result, inspection record, availability, or fulfillment route before quoting.
Identify the governing formed model, drawing and flat-pattern revision; sheet, coil or supplied-blank context; exact material specification and grade; thickness or gauge designation plus actual thickness; temper, hardness or condition; mill finish or protective film; grain or rolling direction when controlled; flat-development method; and supplied-material status.
Define each bend line or tangent convention, inside radius, angle convention and target angle, direction, sequence, bend allowance, deduction, K-factor or bend-table basis when prescribed, flange and return dimensions, hems and offsets, relief geometry, hole-to-bend relationships, and restrained or free-state measurement condition.
State cut-edge and burr requirements, controlled chamfers or edge breaks, holes, slots, tabs and notches, hardware identity and mounting condition, seams and weld joints, mating datums, clearance and fit, finish and masking boundaries, cosmetic faces, inspection method and coverage, acceptance and rejection criteria, preservation, packaging, and requested record fields.
Fulfillment review
Requests are reviewed manually. The fulfillment route and availability are confirmed before acceptance.
Quote inputs
The quote form accepts private files or a written project description, plus optional process, material, material-source, quantity, and timing details. Select Sheet metal in the optional Process field when useful, then describe the controlled flat and formed definitions and any adjacent weld, finish, hardware, assembly, or inspection scope.
Interactive request review
Select a review point on the fixed flat-and-formed layout to see how cut features and reliefs, bend and flange geometry, and hardware, mating, finish, inspection, and protection requirements should remain tied to one controlled definition.
Matching blank and chassis, three review zones
Cut features, formed relationships, and interface or finish boundaries remain visible together while the request details change.
Illustrative example only; markers locate topics for review. They do not establish the controlling revision, obtained geometry, achieved edge or finish, installed hardware result, interface result, inspection decision, package status, project route, or capability.
Sheet metal fabrication review
Select a review feature to see the details that help clarify the request.
Define the controlling flat pattern or formed model, outside profile, holes, slots, notches, tabs, corner and bend reliefs, edge-break requirements, and which dimensions apply before or after forming.
Helpful sheet metal detail
Connect the flat and formed definitions, then label the profile, every cut feature and relief, the dimensions that apply before or after forming, and each required edge condition.
Capabilities
These examples organize the starting point. Cutting and forming method, process and material fit, achievable geometry and edge condition, sequence, hardware and joint scope, finish and inspection requirements, requested records, fulfillment, and timing are confirmed from the project files.
Requests reviewed from the formed and flat revisions, material specification and condition, thickness, grain direction, outside profile, holes, slots, cutouts, notches, tabs, lances or other specified features, corner and bend reliefs, feature-to-edge and feature-to-bend relationships, cut-edge and burr requirements, dimensions controlled in the flat state, and inspection method.
Requests reviewed from every bend identifier, radius, angle and direction; bend-line or tangent convention; flange, return, hem, curl, jog or offset dimensions when present; inside and outside formed dimensions; allowance, deduction, K-factor, bend table or unfold rule when controlled; grain relationship; sequence; access-sensitive features; springback basis when prescribed; and formed-state acceptance.
Requests reviewed from exact insert, fastener and hardware identities, supplier instructions, mounting-hole and sheet condition, installation direction, seams, tabs and slots, weld joint and fit-up definition, adhesive or retention notes, mating parts and datums, clearance and fit, access, assembly sequence, protected surfaces, and inspection criteria.
Requests reviewed from burr and edge-break definitions, cosmetic and protected surfaces, surface preparation, coating or finish specification, masking and coating-free regions, pre- and post-finish dimensional intent, flat or formed inspection state, datums, method, coverage, acceptance and rejection criteria, identification, requested record fields, preservation, package configuration, separation, and handling restrictions.
Quote workflow
A short, human-managed review keeps material, cut features, bends, interfaces, downstream operations, inspection state, acceptance, and open questions visible before work is accepted.
Upload the formed model and drawing, flat definition when available, material specification and thickness, grain or rolling direction, cut and edge features, bends, flanges and reliefs, hardware and joint details, weld and finish boundaries, inspection and acceptance criteria, quantity, and target timing.
File and revision consistency, material form and condition, thickness, grain direction, flat-development basis, cut features, edge requirements, bend radii, angles and directions, flange and relief geometry, sequence, hardware and mounting conditions, seams, welds, mating interfaces, finish and masking, measurement state, acceptance, and requested records are organized for follow-up.
Cutting and forming method, process and material fit, achievable flat and formed geometry, edge and surface condition, sequence, hardware and joint scope, weld and finish requirements, inspection method and coverage, requested record fields, fulfillment, timing, and remaining questions are resolved before acceptance.
Once a request is accepted, the controlled formed model, drawing and flat revisions, material and thickness, grain orientation, profile and cut features, edge and relief definitions, bend data and sequence, hardware and joint identities, mating interfaces, weld, finish and masking boundaries, measurement condition, acceptance criteria, requested records, quantity, timing, and authorized changes become the reference point for project communication.
Request readiness
Clear flat-development, bend, interface, sequence, and acceptance intent is more useful than assuming a standard radius, K-factor, process, or formed result.
Identify the controlling file and revision for the formed part and flat pattern, units, any intentionally added manufacturing features, and how changes propagate. A separately edited flat file can conflict with the formed definition unless the authority and change rule are explicit.
Provide the governing material specification and grade, sheet, coil or supplied-blank context, gauge designation and actual thickness, temper, hardness or other condition when relevant, mill finish or protective film, source status, and rolling or grain direction where bend orientation, appearance, or function makes it controlled.
For each bend, identify the bend line or tangent convention, inside radius, bend angle and whether it is an included, open or rotation angle, direction, inside or outside formed dimensions, and the controlling allowance, deduction, K-factor, bend table or other unfold rule. Do not mix conventions without a stated precedence.
Dimension flange, return, hem, curl, jog or offset geometry when present; locate holes, slots, tabs and notches relative to bend zones and tangencies; define corner and bend reliefs; identify short or return flanges and access-sensitive features; and state bend order, handedness, protected faces, and any free- versus restrained-state condition.
Provide exact self-clinching, riveted, threaded or other hardware identities and supplier instructions, mounting-hole and sheet condition, installation direction, seams and tab-slot relationships, weld joint and fit-up, mating parts and datums, clearance, adhesive or retention notes, finish and masking boundaries, cosmetic faces, sequence, and access.
State which profile, hole, flange, angle, overall, interface, edge, finish and cosmetic requirements are checked flat, formed, free, restrained, before finish or after finish; then define datums, support, method, locations, coverage, acceptance and rejection criteria, nonconformance instruction, requested record fields, preservation, packaging, and handling restrictions.
Materials
Material identity is one layer of the request. Exact specification, grade, thickness, temper or condition, product form, grain direction, incoming surface, bend and edge definitions, joint and finish compatibility, inspection, supplied-material context, and availability are confirmed for each project.
Bracket, cover, panel, tray, guard, chassis and enclosure requests where alloy and temper, sheet or supplied-blank form, actual thickness, mill or protected surface, rolling direction, bend orientation and radius, flat-development basis, reliefs, cut edges, hardware, weld or adhesive joints, finish and masking, cosmetic faces, formed-state inspection, and packaging need review.
5052-H32 · 3003-H14 · 6061-T6 examples
View materialPanel, guard, cover, bracket, tray, housing and chassis requests where exact grade and condition, cold-rolled or other sheet definition, thickness, surface finish and protective film, grain or polish direction, bend radius and sequence, springback basis, edge and burr condition, seams and welds, hardware, finish or passivation sequence, cosmetic faces, inspection, and protected handling need review.
304 · 316/316L · 430 examples
View materialShield, contact, bus, cover, bracket, enclosure detail and formed-conductor requests where alloy and temper, sheet thickness, conductivity or contact-surface context, rolling direction, bend radius and sequence, hole and relief geometry, cut edges, joining and hardware, plating or coating boundaries, oxidation protection, formed-state inspection, and packaging need review.
C10100 · C11000 · C12200 examples
View materialBracket, contact, shield, trim, cover, spring-detail and enclosure requests where alloy and temper, sheet thickness, grain direction, bend orientation and radius, flat-development basis, relief and edge condition, hardware and mating interfaces, solder, braze, weld or adhesive joint notes when specified, finish and masking, cosmetic surfaces, inspection, and protected handling need review.
C26000 · C27200 · C46400 examples
View materialRelated
Use these pages to organize adjacent tube-forming, joining, finishing, assembly, inspection, and application requirements. A related route does not confirm a combined process plan, achieved result, record package, availability, or fulfillment path.
Review bent-tube paths used with sheet brackets, panels, guards or frames, including starting section and wall, bend radii and planes, rotations, end orientation, attachment features, mating datums, fit-up, surface condition, inspection, and sequence.
Review sheet-metal seams and joints, material and condition, joint type, edge preparation, gap and fit-up, tabs and slots, datum transfer, tack and weld sequence, heat and distortion limits, weld appearance and cleanup, protected surfaces, inspection, and requested record boundaries.
Review edge condition, surface preparation, finish and masking, self-clinching and other hardware, adhesives and retention, mating interfaces, finishing and assembly sequence, final condition, inspection, preservation, and packaging around a formed sheet part.
Review substrate and incoming surface, exact finish definition, preparation, coated and coating-free zones, threads, contacts and fits, thickness or allowance intent, colour and cosmetic surfaces, rack or contact restrictions, inspection, acceptance, and protected handling.
Review flat and formed characteristics, free or restrained state, support and datum scheme, profiles, holes, flanges, angles, overall dimensions, mating interfaces, edge and surface condition, finish, method, locations, coverage, acceptance, and requested record fields.
See common guard, cover, panel, bracket, tray, enclosure and chassis request contexts where mounting interfaces, cutouts, bends, seams, hardware, welds, finish, inspection, protection, and acceptance need definition without implying current program support.
FAQ
Start with a private formed STEP or STP model and matching PDF drawing, a controlled flat-pattern DXF or DWG when available, or a written project description. Add drawing and flat revision, units, material specification and grade, thickness or gauge and actual thickness, temper or condition, grain direction, cut and edge features, every bend and flange, allowance or unfold basis when controlled, reliefs, hardware, seams and joints, weld, finish and masking, inspection and acceptance criteria, quantity, and timing. Select Sheet metal in the optional Process field when useful.
The formed model communicates final geometry and interfaces; the flat pattern communicates the developed blank, bend lines, reliefs, and manufacturing cut definition. They must reference the same revision and material rule. State which file controls, whether the flat was derived or intentionally edited, and how bend allowance, deduction, K-factor, a bend table, or another unfold rule was applied so conflicting geometry is not silently assumed.
Identify each bend and its inside radius, bend line or tangent convention, angle and angle convention, direction, sequence, flange or return dimensions, hems, curls, jogs or offsets when present, inside or outside dimension basis, grain relationship, controlled allowance or springback-compensation basis when prescribed, and whether acceptance is measured free or restrained. Avoid a generic bend note that leaves the angle or dimension convention unclear.
Locate holes, slots, notches, tabs and other features relative to bend zones, tangencies and edges; define bend, corner and seam reliefs; provide exact hardware and mounting-hole requirements; show seams, joints, tabs, slots and weld fit-up; identify mating datums and access; and map preparation, finish, masking, cosmetic faces and protected surfaces. State the intended cutting, forming, hardware, joining and finish sequence rather than expecting it to be inferred.
Inspection and documentation requirements can be reviewed during quoting. No certification or report package is implied until confirmed.
Requests are reviewed manually. The fulfillment route and availability are confirmed before acceptance.
Start with the files you have
Share the controlled formed model, drawing and flat definition, material and thickness, grain direction, cut and edge features, bend and flange data, reliefs, hardware and joint details, weld and finish boundaries, inspection state and acceptance criteria, preservation and packaging notes, requested records, quantity, and timing. Pearson will follow up on the details that still need confirmation.
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