11 min read
Design and CAD
→Flat pattern for sheet metal: what the CAD flat must contain
Flat pattern for sheet metal: the eight things a CAD flat must carry, the bend deduction worked at 2 mm, and the reliefs that stop a corner tearing.
Ganesh engineering library
Sheet metal, explained by the people who make it
377 guides on stamping, laser cutting, bending, welding, coating and the parts we build for lift, power, data centre, railway and farm equipment. Every article is reviewed by the engineering team before it is published.
- 377
- published guides
- 14
- topic hubs
- 3 Nov 2026
- last technical review
Browse by topic
Nine clusters, each mapped to a capability or product page.
32Stamping, presses and press toolsPressed, punched and deep drawn sheet metal parts, the tooling that makes them, and the DFM rules that decide whether a part suits a press at all.29Laser cutting and sheet metal fabricationFibre laser cutting, nesting, edge quality, tolerance and the cost drivers behind a cut part, including long panels cut on the 40 ft × 16 ft bed.38Bending, welding and finished assembliesPress brake bending, bend allowance, fixtures, robotic MIG welding, distortion control and the tolerances a finished welded assembly can actually hold.28Surface treatment and powder coatingSeven-tank pretreatment, phosphating, shot blasting, powder and wet paint selection, film thickness and the failure modes that show up two monsoons later.22Elevator and lift componentsCounterweight frames, car frames, slings, guide rail brackets, door panels and controller enclosures made to lift OEM drawings.24Genset, canopy and acoustic enclosuresDG set canopies, acoustic panels, louvres, base frames, skid bases and control panel enclosures, engineered for weather, access and noise.28Data centre racks and electrical enclosures19-inch rack frames, mounting rails, perforated doors, blanking panels, PDU brackets and the electrical enclosures around them.16Tractor, forklift and material handlingTractor panels and brackets, forklift overhead guards, counterweight covers, mast parts and material handling components built for vibration and abuse.16Railway, furniture and infrastructureRailway coach panels, underframe brackets, fittings, metal furniture frames, shelving and signage, where standards and traceability carry as much weight as the part.38Materials and gradesGrade selection for CRCA, stainless, aluminium, brass and copper: formability, thickness, corrosion and what the mill certificate actually guarantees.30Standards and complianceWhich standard applies, what it actually covers, and the evidence a buyer should ask for: ISO, IEC, EN, RDSO and material certification.44Design and CADDesign rules, CAD hand-off, bend allowances, tolerance stacks and the drawing notes that decide whether a part is made right first time.4Applications and casesApplication-led problems from lift shafts, genset sites, data halls, railway coaches, farms and warehouses, and how the part is designed around them.28Plant, quality and sustainabilityHow the plants run: quality systems, inspection, calibration, pretreatment chemistry, effluent, maintenance, energy and scrap.
All guides, page 28
Search the library →10 min read
Standards
→Mill certificates for sheet metal: what they prove
Mill certificates explained for sheet metal buyers: what a 3.1 certificate states, what it leaves out, and the four numbers that decide whether a coil forms.
11 min read
Railway and infrastructure
→Railway vestibule bracket design: tolerances, DFM, inspection
Railway vestibule bracket design for coach end walls: bolt and doubler rules, stainless weld finish, coating allowance and the inspection record RDSO expects.
11 min read
Materials
→1050 aluminium for sheet metal parts: grade and formability
1050 aluminium grades, tempers, thickness tolerance and formability: what the 99.5% purity buys, where it marks, and the bend and weld limits to design to.
9 min read
Laser cutting
→DXF preparation checklist for a laser cutting RFQ
The ten checks that stop a laser cutting RFQ bouncing: scale, closed contours, duplicate entities, kerf compensation, bend layers and file naming.
11 min read
Coating
→Zinc plating versus galvanising: tolerance consequences
Zinc plating versus galvanising by coating mass, corrosion life and the dimensional change each one forces on holes, threads and thin panels.
11 min read
Stamping
→Progressive Die versus Single-Stage Press Tool
Compare progressive and single-stage press tools on output per press, material utilisation, tolerance stack-up and the volume where the tool premium pays back.
12 min read
Elevators
→Elevator counterweight frame design guide
How to size, detail and manufacture an elevator counterweight frame: balance weight, filler stack, tie rods, shoe brackets, tolerances and coating allowance.
10 min read
Stamping
→Turret punching versus laser cutting for sheet metal
Turret punching and fibre laser cutting compared on hit rate, tool count, pierce time and energy, with the perforated-panel numbers that decide the route.
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