Archive for March, 2014

Breaking the mishap chain

Breaking the mishap chain

Human Factors Lessons Learned From Aerospace Accidents and Incidents in Research, Flight Test, and DevelopmentBy Peter W. Merlin, Gregg A. Bendrick, and Dwight A. Holland This book is a series of case studies looking at mishaps with aircraft and space

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Richard Deacon at Tate Britain

Richard Deacon at Tate Britain

When I saw the posters for this exhibit I knew I had to go and see it. Like the fliers these posters feature a work called “After” in wood and metal which fills one of the later rooms of the

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Box lid an afternoon woodworking project

Box lid an afternoon woodworking project

Not so long ago we bought a box to put by the front door and put our shoes in, the old portis shoe rack now lives by the backdoor. The box came with a rather strange lid, a sheet of

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Tolerances and fit calculations

Tolerances and fit calculations

Whilst looking for tables of tolerances and fits for my clock spindles, I stumbled upon Mitcalc. This is a series of Excel spreadsheets that simplify engineering calculations. The sheets provide a simple interface to select and enter parameters and displays

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Best tip to save $20

Best tip to save $20

Q: What is your best tip for saving $20 asked Economag.A: Don’t be afraid to get your hands dirty. The best way of saving a bit of money is to make and fix things yourself. For example: Repair a brass

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Clock shafts

Clock shafts

Like any normal clock, the topsy turvey clocks requires two concentric spindles. The original spindle sizes were 1.6mm and 3.3mm to fit the hands. The size needed for the gear wheels I purchased was 4mm. The lengths need to be

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Sealant beading tool

Sealant beading tool

I hate working with silicone sealant.It smells terrible.It’s a pain to wash off your skin.It doesn’t go where you want it to.It gets very messy very quickly. So when I had to seal up around the freshly lain lino, it

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