What is reduction firing?

Reduction firing bakes bricks or roof tiles in an oxygen-starved kiln, turning red clay blue-grey. How it works, the Dutch ‘blauw gesmoord’ and practical tips.

What is a fuse cartridge?

A fuse cartridge contains a wire that melts when too much current flows, cutting off the circuit. How it works, colour codes, gauge rings and safe replacement.

What is a fusible fire wall anchor?

A fusible anchor ties a fire wall to a steel frame and softens in a fire, so collapsing steelwork does not pull the wall down. How it works and where it is used.

What is wrought iron?

Wrought iron is tough, low-carbon iron with fibrous slag inclusions, once forged into wall ties, railings and tools. How to recognise it, protect it and repair it.

What is a smart grid?

A smart grid is an electricity network that continuously measures and balances supply and demand, so many small generators can export without overloading it.

What is hand-thrown spoil (smakgrond)?

Smakgrond is the Dutch term for spoil a labourer can throw straight from an excavation onto the bank in one shovel stroke. History, benching and practical tips.

What is the lock-side gap?

The lock-side gap is the clearance between a door or casement and its frame on the lock side. Why it matters for security, how to adjust it and mistakes to avoid.