Electronics

3D Printing

Here we’re going to use 3D printing to do a modern twist on “lost wax” casting.
It’s a trick that’s more than 5000 years old: make something in wax, bury it in clay or plaster leaving a hole in the shell. Bake the heck out of it to remove the wax and then pour molten metal down the hole. If everything stays together, you get a metal replica of your wax object.

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Make your own telescope

This a project to make a popular Newtonian-design reflector telescope with a Dobsonian mount. The principle of the telescope is to collect light and then magnify the image. The light from a distant object (a star or planet) is gathered by the mirror and brought to a focal point. The eyepiece is used to focus and enlarge the image. By changing the eyepiece, we can increase the magnification and the size of the image. The larger the objective or mirror the more light it can gather and therefore you can use a higher magnification eyepiece.

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Fractul (or Lichtenberg) wood burners are not safe, do not build or use

WorkSafe NZ has contacted The Shed and advised us of two recent deaths of New Zealanders using a Lichtenberg wood burner. They have advised us that these electrical devices are not safe to use and are dangerous.
Do not build or use one of these machines under any circumstances as they are unsafe and can cause fatal injuries.
See this information on the Worksafe website https://www.worksafe.govt.nz/about-us/news-and-media/fractal-burning/

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Electric bikes – taking care of business

Let’s face it e-bikes are everywhere and they are here to stay. If the thought of extra complications and potential breakdowns are putting you off buying one then you’re not alone. Would you like an e-bike that you can build and maintain yourself?
Something that goes better than most, is easy to service and diagnose with readily available parts and plenty of support is becoming a priority for a lot of people looking for an e-bike that won’t end up as landfill in a few years’ time.

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Make a simple vacuum former

A vacuum former is a very handy piece of equipment to have around the home workshop.
It works quite simply: heated plastic is sucked rapidly and strongly over a pattern or formed shape. As soon as the plastic has set again, it retains the shape.

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Simple hydroponics nutrient solution

Hydroponics is all about growing without soil. In many ways, this simplifies the lot of the gardener, but it gives them added responsibility for providing plants with the right level of nutrients.
As water with nutrients tastes, feels, and looks much the same as plain water, a testing instrument called an “EC meter” or “CF meter” is used.

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The Shed July/August 2020 Issue 91, on sale now

The July/August 2020 issue of The Shed, No. 91, has got something in it for every sheddie.
Even though there is something of a nautical theme to this issue, our cover story is on building a very powerful, vertical, hydraulic log splitter. Bill Stevenson from Christchurch walks us through the construction of his trailer-mounted log-splitting machine that was started prior to the Covid-19 lockdown, worked on during, and completed immediately after. A great effort.

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The Shed May/June 2020, Issue 90, is on sale now

Issue 90 of The Shed has a treat for lovers of fast off-road action. We visit the shed of Cowper Trucks who make world-beating 800hp 4×4 off-road race vehicles. Built strong, tough, and powerful from a shed outside Whanganui, this is automotive engineering at its best.

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The Shed March/April 2020, Issue 89, in shops now

Issue 89 of The Shed has a great mix of projects and sheddie talents to enjoy.
Nigel Young records the build of a mega-sized spit roast BBQ. Built by the team at the Halswell Menzshed as a fundraising project, this big trailer-mounted gas-burning beast of a cooker can take a full-sized pig for those big gatherings or fund-raising projects.

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