10 min read
Coating
→Degreasing copper parts before coating
Degreasing copper parts is a different job from cleaning steel: the oxide, the acid sensitivity and the 0.4 mm of thermal growth all change the process.
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 42
Search the library →11 min read
Materials
→Hot-rolled mild steel corrosion and finish compatibility
Hot-rolled mild steel corrosion starts at the mill-scale surface, not at the coating. Exposure rates, blast grade, powder build and the HDG crossover.
12 min read
Genset and canopies
→Genset acoustic enclosure: design, materials and manufacturing
How a genset acoustic enclosure is designed and built: skin gauge, lining, gasket, base frame and coating, with the mass-law and leak numbers behind each.
11 min read
Design and CAD
→Design for service: access panels and wear parts
Design for service rules for sheet metal: access aperture sizes, gasket pitch, fastener choice, panel stiffness and how to make a wear part replaceable without a grinder.
12 min read
Elevators
→Elevator cabin panel: design, materials and manufacturing
An elevator cabin panel is judged on flatness and joint reveal: 1.2 mm 304, 1 mm/m flatness, 3 mm shadow gaps, and a bend allowance of 2.7 mm at 90°.
11 min read
Stamping
→CRCA stamping for OEM brackets and panels
CRCA stamping for OEM brackets and panels: grade choice, blank tonnage, nesting yield, stretcher strains and the pretreatment that stops rust at the edge.
9 min read
Materials
→Thickness tolerance and its effect on 5052 aluminium parts
5052 aluminium thickness tolerance: what the mill band allows, how it moves bend deduction, mass and fit, and how to measure it and specify it on the drawing.
11 min read
Design and CAD
→Coating masking for sheet metal: what to mask and why
Mask the earth stud, the thread and the mating face, or rework the part. Film numbers, plug temperatures and the masking schedule that belongs on the drawing.
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