Cut, formed and finished to your part requirements.
GPT Precision supplies custom sheet metal components, including brackets, enclosures, panels, housings and formed metal parts—from prototypes to repeat production.
We plan the manufacturing route around your part geometry, matériau, assembly requirements and quantities, using laser cutting, bending, stamping and metal spinning where appropriate.
When critical interfaces require additional precision, secondary CNC machining can be incorporated into the process.
A fabricated metal component must do more than match its overall shape. Mounting holes must align, formed edges must fit adjoining components, and finished surfaces must meet the requirements of the assembly.
GPT Precision supplies custom sheet metal parts to customer drawings, with attention to the features that control fit, function and final acceptance.
Custom mounting brackets, support plates, equipment supports and formed structural components.
Engineering focus: Mounting hole positions, flange geometry, bend locations and dimensional relationships that control assembly alignment.
Equipment enclosures, protective covers, access panels and fabricated sheet metal housings.
Engineering focus: Panel fit, joining details, hardware installation, assembly clearances and visible surface quality.
Conical shells, domes, cylindrical covers and other suitable rotationally symmetric components.
Engineering focus: Formed profile, diameter, roundness, local wall thickness and connections to mating parts.
The manufacturing route is selected around the finished component—not a single fabrication process.
Different geometries, materials and production requirements call for different fabrication methods. Some components can be produced through one primary process, while others require a coordinated sequence of cutting, forming and secondary operations.
For flat profiles, holes and blanks ready for further fabrication.
Laser cutting produces sheet metal outlines, slots, holes and other cut features without dedicated stamping dies.
It can create a finished flat component or prepare a blank for subsequent bending, joining or secondary machining. The process is particularly useful when design flexibility and complex cut profiles are important.
Review: Material thickness, hole dimensions, feature spacing, edge quality and proximity to bends.
For functional bends, flanges, brackets and enclosures.
Press-brake bending transforms flat sheet metal blanks into three-dimensional components.
Material condition, bend radius, rolling direction and tooling influence the formed geometry. The manufacturing plan must account for springback, tool access and the dimensional relationships required in the finished part.
Review: Bend angles, inside radii, flange lengths, relief features, hole-to-bend distances and assembly clearances.
For repeatable pierced and formed features supported by production tooling.
Metal stamping uses dedicated dies to cut, pierce or form sheet metal components. Depending on the tooling design, several operations can be combined into a controlled production sequence.
Stamping is worth evaluating when design stability, feature requirements and expected demand support the tooling investment.
Repeat orders alone do not automatically make stamping the most economical manufacturing route.
Review: Feature complexity, tooling investment, material behavior, burr requirements, production quantities and anticipated design changes.
For rotational shells, cones, domes and circular formed components.
Metal spinning shapes a rotating metal blank over tooling to create an axisymmetric profile.
For suitable designs, spinning can produce continuous formed shells without the longitudinal seams associated with joining separate formed panels.
Where spinning and deep drawing are both technically feasible, the preferred process depends on component geometry, tooling requirements, expected demand and acceptance criteria.
Review: Material formability, diameter, profile depth, local wall thickness, trimming requirements and secondary features.
Sheet metal fabrication is not always a single operation. The finished component may require several processes arranged in a sequence that protects its critical features.
A flat panel may need cutting, deburring and finishing. An enclosure may require bending, joining and hardware installation. A spun shell follows a different forming and trimming route.
The manufacturing plan considers three important relationships.
Holes, slots, flanges and relief features must remain functional after forming.
Features positioned close to bend lines can be affected by material deformation or tooling interference. Their placement should be evaluated against the finished geometry and assembly requirements.
Material grade, temper, sheet thickness and rolling direction influence bending and forming behavior.
Springback, minimum practical bend radius and local thickness variation may affect the selected process and tooling.
Welding, riveting, hardware installation and other secondary operations can affect alignment, access and dimensional stability.
The manufacturing sequence should account for joining distortion, workholding and the dimensions that must be maintained in the delivered component.
Critical features are identified before production so cutting, forming, secondary machining and inspection can be coordinated around the finished part.
Formed geometry where appropriate. Machined precision where required.
Some fabricated sheet metal components contain features that need closer dimensional or geometric control than the selected forming route alone can provide.
Mounting faces, precision holes, locating features and sealing interfaces may require secondary CNC machining to achieve the specified functional relationships.
GPT Precision combines CNC machining capabilities with fabrication planning to address these requirements where appropriate.
Secondary CNC machining is applied where functional requirements justify it.
Thin walls, formed geometry and workholding constraints determine what can be machined reliably. Not every sheet metal component requires or is suitable for this additional operation.
Material selection affects formability, corrosion resistance, surface condition and manufacturing cost.
Specify the material grade, sheet thickness and temper or supplied condition alongside the finished-part drawing.
| Material | Manufacturing considerations |
|---|---|
| Alliages d'aluminium | Temper, bendability, weight, corrosion resistance and surface requirements |
| Acier inoxydable | Forming behavior, work hardening, corrosion resistance and surface condition |
| Acier au carbone | Formability, structural requirements and protective finishing |
| Galvanized Steel | Coating condition, exposed cut edges, forming and joining requirements |
| Copper Alloys | Conductivity, material condition, formability and surface protection |
Common project specifications may include aluminum 5052 or 6061 and stainless steel 304 or 316.
Material grade alone does not determine suitability. Temper, thickness and supplied condition must be considered alongside the required geometry and manufacturing process.
Specific material availability and procurement arrangements are confirmed against project requirements.
The required surface condition should be defined before production.
Depending on the material and application, specifications may include:
For visible or exposed components, identify cosmetic surfaces, acceptable marks, edge conditions and coating coverage.
These requirements help establish the final appearance and inspection criteria.
Fabricated components may require welding, riveting, threaded inserts, captive fasteners or other assembly features.
Joining and hardware installation are evaluated together with accessibility, dimensional effects, assembly requirements and the delivered condition.
Applicable finishing, joining and assembly operations—and their production arrangements—are confirmed as part of the agreed project scope.
Different processes. Different dimensional requirements.
Sheet metal fabrication involves different dimensional behaviors across cutting, bending, stamping and spinning.
A cut profile, formed flange and precision-machined interface should not automatically be assigned the same tolerance expectations.
Identify critical functional dimensions separately from general fabrication requirements.
| Processus | Features to specify |
|---|---|
| Laser Cutting | Cut profile, hole size, feature position and edge condition |
| Moulage & Bending | Bend angles, flange dimensions and formed-feature relationships |
| Metal Stamping | Pierced and formed dimensions, burr direction and feature consistency |
| Metal Spinning | Profile, diameter, roundness, local wall thickness and trimmed edges |
| Secondary CNC Machining | Critical interfaces, precision holes, datum relationships and geometric tolerances |
Mounting holes, locating features, sealing interfaces and other functional dimensions may require individual tolerances and inspection methods.
Critical dimensions should be evaluated against the specified drawing datums and agreed inspection condition.
Where forming, joining or coating may affect fit, the acceptance stage must be clearly defined.
Inspection requirements are established according to the drawing, process route and delivered condition.
Depending on the component, inspection may address:
Material certificates, dimensional inspection reports, first-article records and traceability requirements should be identified during quotation.
Document availability, report format, inspection scope and acceptance criteria are agreed for the project.
Keep the manufacturing route aligned with your project stage.
Prototype fabrication and repeat production may require different approaches to tooling, cost and design flexibility.
Early builds often prioritize flexibility while the part geometry, fit and functional requirements are being established.
Laser cutting and bending can provide practical manufacturing routes for parts that may still undergo design changes.
Critical features and acceptance requirements should be identified during this stage so they can be maintained in subsequent production.
As the design stabilizes, dedicated stamping tooling or an adjusted fabrication sequence may become worth evaluating.
The manufacturing comparison should consider:
A higher order quantity does not automatically require a different manufacturing process.
Where the manufacturing method changes, initial samples should be evaluated against the approved drawing and critical functional requirements before repeat production.
Drawing revisions, sample approval and agreed inspection criteria help maintain consistency across production stages.
Sheet metal fabrication is generally suitable for components based on cut profiles and formed geometry, including brackets, panels, covers and enclosures.
Parts requiring substantial material removal, deep pockets, solid sections or complex machined features may favor CNC machining.
Some components benefit from a combined fabrication and machining route.
Yes. Cutting, forming, joining, hardware installation and secondary CNC machining can be evaluated together as part of the proposed manufacturing scope.
The appropriate operations and sequence depend on the component geometry, matériau, dimensional requirements and final acceptance criteria.
Production arrangements and responsibilities are confirmed for the individual project.
Yes, where the design features and tooling economics justify the process.
Stamping suitability depends on tooling requirements, setup, order quantities, anticipated repeat demand and possible design changes.
For some projects, laser cutting and bending remain more economical, even when the component is ordered repeatedly.
Provide the finished-part drawing and 3D model where available, along with any existing flat pattern.
The finished-part drawing should identify critical dimensions, datums and assembly requirements.
Flat-pattern dimensions may require adjustment according to material behavior, bend allowance and the selected forming method. Clarify which documents control final acceptance.
Critical dimensions should be identified on the drawing with the relevant datums, tolerances and acceptance requirements.
Moulage, joining, hardware installation and surface treatment can affect dimensional relationships.
The inspection stage and method are established according to the required delivered condition. Initial-part verification and subsequent inspection requirements are agreed for the project.
Share your design. Define what must fit.
Whether you need a prototype bracket, equipment enclosure or formed metal component for repeat production, GPT Precision can help establish a manufacturing route around your drawing and part requirements.
Our team will review these inputs to establish the proposed manufacturing and quotation scope, including any engineering details that require clarification.
