11 min read
Genset and canopies
→Genset cable entry panel design: DFM and tolerances
Gland plate thickness, hole spacing, gasket compression, earthing and the acoustic seal that keep water and noise out of a DG set canopy.
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 34
Search the library →10 min read
Coating
→Paint line part hanging: design, failure modes and the fix
How a part hangs decides coverage, drainage and cure. The angles, hole sizes and load rules that stop runs, bare corners and undercured parts.
11 min read
Design and CAD
→Design for galvanising: vents, drains and distortion
Air out, zinc in, zinc out: vent and drain sizes, distortion limits and thread allowances for sheet metal parts that go through a hot dip galvanising bath.
11 min read
Elevators
→Elevator door alignment: design, failure modes, the fix
Why a landing door will not shut cleanly: gap, flatness, sill level and hanger numbers for elevator door alignment, with the site adjustment order that works.
11 min read
Elevators
→Elevator car door panel design: tolerances and DFM
Bend radii, hole clearances, coating allowance and the gap and flatness targets that decide whether an elevator car door panel fits and looks right.
10 min read
Stamping
→Minimum hole size stamping: limits by material and thickness
Minimum hole size stamping limits by material and thickness, the pierce force behind them, hole-to-edge and web rules, and when a small hole goes to laser.
11 min read
Design and CAD
→Tolerance stack-up for sheet metal: worst case vs RSS
Tolerance stack-up for sheet metal: worst case and RSS side by side, the bend angle term that dominates, and the bias correction RSS usually ignores.
10 min read
Stamping
→Deep drawing design rules for production parts
Deep drawing design rules that decide whether a cup forms in one stroke: draw ratio, blank diameter, punch and die radii, clearance and tooling route.
10 min read
Design and CAD
→Louvres for sheet metal: free area, blade angle and stiffness
Louvre design for sheet metal: free area arithmetic, blade angle for rain rejection, blade span limits and the pressure drop at working velocity.
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