The Engineering Notebook
Simplify, Expand and Optimise your Engineering Knowledge

Latest

Nov
19

Knurling; What? Why? How?

Knurling adds textured patterns to surfaces, enhancing grip and bonding. Applied by machine or hand-applied, it's used in tools, connections, and over-molding.
2 min read
Oct
29

Shot Peening; What? Why? How?

Shot peening is a crucial metal treatment process that enhances the fatigue resistance, durability, and surface hardness of components. This technique involves firing small beads at high velocity onto a material's surface, inducing compressive stress and improving mechanical properties.
4 min read
Oct
22

Galvanising; What? Why? How?

Galvanisation coats iron/steel with zinc to prevent corrosion. The process helps to improve durability and lifespan.
2 min read
Oct
09

Black Oxide Coating; What? Why? How?

Black oxide coating is a chemical surface treatment for ferrous materials which enhances corrosion and wear resistance.
2 min read
Sep
24

Passivation; What? Why? How?

Passivation builds a protective layer on metal surfaces, enhancing corrosion resistance. It's vital for stainless steel, restoring protection after fabrication.
3 min read
Sep
17

Pickling; What? Why? How?

Pickling is a metal cleaning process using acidic baths to remove impurities. It's simple, affordable, and improves corrosion resistance. While effective, it has drawbacks like solution degradation and hazardous waste production.
2 min read
Aug
20

Surface Roughness Chart

Surface finish describes texture requirements for surfaces, including roughness (small defects), waviness (larger imperfections), and lay (pattern orientation). Symbols on technical drawings specify these textures and necessary manufacturing processes, helping to avoid extra costs and delays.
1 min read
Aug
06

The Fundamentals of Surface Finish

3 min read
Jul
02

What are J Threads?

2 min read
Jun
18

Minimum Wall Thickness; CNC Machining

2 min read