12 min read
Stamping
→Stamping vs CNC machining: choosing for flat parts
Stamping vs CNC machining for flat parts: cycle time, tolerance, burr and scrap, with the tooling break-even worked in machine-hours, not a rule of thumb.
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 30
Search the library →11 min read
Stamping
→Common Stamping Defects and Their Causes
Splits, wrinkles, earing, twisted flanges and growing burrs: how to read a stamping defect back to its physical cause and fix the right variable.
10 min read
Tractor and forklift
→Forklift overhead guard fabrication: ISO 6055 limits
Forklift overhead guard fabrication to ISO 6055 dimensions: roof opening limits, clearances, weld sequence, deflection control and coating.
11 min read
Elevators
→Elevator rope attachment bracket manufacturing: the route
Elevator rope attachment bracket manufacturing: the 4 kN rope load, the post-weld reamed pin bore, weld access, coating masking and the checks that keep rope centres aligned.
11 min read
Bending and welding
→How to design a welding fixture for sheet metal parts
A welding fixture starts from the datum scheme and the weld sequence, not the part outline. Locator layout, clamp placement, torch access and the build tolerances that hold.
10 min read
Standards
→Surface finish symbols: scope, limits and what to ask for
What surface finish symbols fix on a drawing, why an Ra callout on a laser-cut edge cannot be measured, and the coating numbers that should replace it.
10 min read
Stamping
→Tooling tryout: what a press tool should prove before production
Tooling tryout, done properly: measured tonnage, strip test, die clearance, first-off dimensions, capability and the adjustment record signed before release.
10 min read
Railway and infrastructure
→Laser cutting for railway coach panels: limits and edge quality
Coach panels are long, hole-heavy and revise late. Here is where laser cutting wins, the hole and edge limits to design to, and how nesting changes the cost.
10 min read
Design and CAD
→Countersinks and dimples for sheet metal: flush fasteners
A countersink needs 0.5 mm of material under the cone. Below that you need a dimple, a thinner screw or a thicker sheet. Here are the numbers.
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