EN8, EN24, EN31 - which steel for which job
A practical comparison of three common engineering steels used in Indian machining units, including strength, machinability, and typical applications.
Steel5 min read
Material Grades and Hardness
8 articles
Mild steel vs alloy steel - when the cheaper option costs more
IS 2062 vs EN grades, and where mild steel is adequate versus where it will fail under load or heat.
Steel4 min read
Understanding Brinell vs Rockwell hardness
What hardness values mean in practice, how to use them when sourcing raw material, and what to ask your vendor.
Hardness4 min read
How to read a mill certificate
What each field means, what to check before accepting delivery, and what to reject before material reaches your shop floor.
QC6 min read
Aluminium alloys - 6061, 7075, 2024 compared
Grades, temper designations, and machining considerations for the most common aluminium alloys.
Aluminium5 min read
Stainless steel grades - 304 vs 316 vs 202
Corrosion resistance, weldability, and cost tradeoffs between the grades seen most often in fabrication and food-grade applications.
Stainless5 min read
What hardness testing methods are available in India
Where to get hardness testing done, what it costs, and when reverse-engineering a part's grade from hardness is reliable enough to act on.
Testing4 min read
Cast iron grades - grey, ductile, white and malleable
The four main families of cast iron, their mechanical properties, and which machining contexts each is suited for.
Cast Iron5 min read
Common Manufacturing Processes
6 articles
CNC turning vs milling - when to use which
A practical guide to two core subtractive machining processes, what each produces, and where they overlap.
CNC5 min read
Sheet metal operations - cutting, bending, punching
The core sheet metal processes, typical tolerances, and how thickness affects which operations are viable.
Sheet Metal5 min read
Surface finishing - anodizing, plating, powder coat
When to specify each finish, what to tell your vendor, and how to avoid over-specifying finish on functional surfaces.
Finishing6 min read
Die casting basics - zinc, aluminium, and pressure
How die casting works, typical tolerances, wall thickness constraints, and draft angle requirements.
Die Casting6 min read
Welding processes - MIG, TIG, arc and spot
Which welding process fits which material and joint, with a practical guide for vendor-facing requirements.
Fabrication5 min read
Heat treatment types - annealing, hardening, tempering
What each process does to microstructure, the typical temperatures involved, and when to specify treatment.
Heat Treatment6 min read
Cutting Tools
5 articles
Carbide insert coatings - TiN, TiAlN, TiCN explained
Which coating fits which material and cutting condition, with a practical decision guide for CNC operators.
Tooling7 min read
Carbide vs HSS - when high-speed steel still makes sense
Why HSS still wins in certain interrupted cuts, small-batch work, and geometries despite carbide dominance.
Tooling5 min read
How to extend tool life without compromising finish
Cutting parameters, coolant strategy, chip load management, and the mistakes that kill inserts early.
Tooling5 min read
Choosing the right drill - geometry, point angle, and coating
Jobber vs stub vs long series, 118 degree vs 135 degree point angle, and when pilot holes are worth it.
Drilling5 min read
Taps, reamers, and boring tools - when to use each
Threading, finishing, and precision bore operations, plus tolerances achievable with each tool type.
Tooling5 min read
Glossary of Terms
3 articles
Glossary A-F
Annealing, BOM, chamfer, datum, EDM, fixture, and more common manufacturing and procurement terms defined simply.
Reference
Glossary G-M
GD&T, heat treatment, ISO tolerance, jig, knurling, lead time, mill certificate, and more in shop-floor language.
Reference
Glossary N-Z
Normalizing, OD and ID, purchase order terms, runout, surface roughness, tolerance, VMC, work-hardening, and more.
Reference
Maintenance Guides
4 articles
Machine maintenance basics for small CNC units
Daily, weekly, and monthly checks that prevent common CNC failures in smaller units without full-time maintenance teams.
Maintenance6 min read
Coolant management - concentration, pH, and contamination
How to check and maintain coolant health, when to change it, and how degraded coolant hurts finish and tool life.
Coolant5 min read
Spindle care - speed limits, warm-up, and bearing wear
How to protect the most expensive component on your CNC and spot the early signs of bearing wear.
Spindle5 min read
Building a preventive maintenance schedule for your unit
A practical template-based PM schedule for small and medium machining units without dedicated maintenance staff.
PM7 min read