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Articles and engineering tools.

Short technical notes on the work inside an enclosure, a transformer build and a compressor room, plus the free calculators we use ourselves.

Articles

Compressed air

What compressed air leaks cost an Ontario plant, and how to measure yours

A leak you cannot hear over production can still cost thousands of dollars a year. How much air a leak wastes, what that costs at Ontario electricity rates, and a weekend test that tells...

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Compressed air incentives in Ontario: what Save on Energy pays and how to get it

Save on Energy can pay up to half the cost of a compressed air upgrade in Ontario. How the Retrofit program calculates the incentive, a worked example from a real compressor swap, and the...

Read the article Machine safety

Light curtains on presses: choosing resolution and safety distance

A light curtain only protects if it is mounted far enough from the hazard for the machine to stop first. How detection capability, stopping time and the safety distance formula fit together, with a...

Read the article Busbar

Why busbar edge quality shows up as joint temperature

A burr on a punched busbar hole looks cosmetic. At a bolted joint it reduces real contact area, raises resistance and shows up later as a hot spot on a thermal scan. What to...

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Threads in thin sheet: thermal drilling, press nuts or weld nuts?

Enclosure frames, mounting rails and gland plates need threads in metal that is too thin to hold them. Here is how the three common answers compare on strength, cost per hole and what can...

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