9 min read
Coating
→Degreasing electrical enclosures before coating
Degreasing electrical enclosures before coating: mill oil, press lubricant and laser oxide, the seven-tank route, drain holes and the adhesion checks that hold.
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 41
Search the library →10 min read
Design and CAD
→K-factor in CAD for sheet metal: why model and brake disagree
The K-factor in CAD is an assumption about a die you have not chosen yet. Here is the bend deduction it produces, and how to close the gap.
10 min read
Racks and enclosures
→Battery rack load: design, failure modes and the fix
Battery rack load is a floor problem before it is a steel problem: 2,150 kg over 0.84 m² puts 25 kN/m² on the slab and 5.3 kN on each foot. Here is the fix.
10 min read
Standards
→Control plan for process control: scope and limits
A control plan only works when frequency and reaction are sized. How to read one, the exposure arithmetic behind the interval, and where ISO 9001 stops.
11 min read
Elevators
→Elevator rail clip and fishplate bracket design guide
Slot sizing, clamp length, bolt preload and coating choice for elevator rail clips and fishplate brackets, with the joint tolerances that hold rail alignment.
10 min read
Stamping
→Prototype tooling materials: what to use for a short run
Prototype tooling materials chosen by stroke count: when a mild steel block is enough, when EN31 earns its heat treatment, and where D2 is wasted money.
10 min read
Design and CAD
→Corner relief for sheet metal: why a box corner tears
A box corner tears because two bend zones claim the same material. How to size corner relief against both bend allowances, and why a 3 mm hole is usually too small.
10 min read
Bending and welding
→Robotic versus manual welding cost: the crossover
Robotic versus manual welding cost: arc-on time, minutes per metre, fixture hours and the part count where a cell pays back, worked on a 4.2 m frame.
9 min read
Materials
→When 430 stainless is the wrong material for a part
When 430 is the wrong material: the welded, wet and cold duties it cannot carry, the substitution numbers, and whether 304, 444 or coated CRCA fits.
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