Painting in Metal with Selective Electroplating

The bed of a small CNC machine is shown. A plastic tub is on the bed, and in the tub is a sheet of metal under a pale green solution. In place of the spindle of the CNC, there is a rectangular orange tube extending down into the solution. A red wire runs to this tube, and a black wire runs to the sheet of metal in the tub.

Most research on electroplating tries to find ways to make it plate parts more uniformly. [Ajc150] took the opposite direction, though, with his selective electroplating project, which uses an electrode …read more Continue reading Painting in Metal with Selective Electroplating

Rubbery electrolyte makes for longer-lasting, safer EV batteries

Famously an insulator, rubber might not seem like a great candidate for an electrolyte material in a battery, but researchers at Georgia Tech have developed a new rubbery material with a high conductivity. This elastomer electrolyte could make for safe… Continue reading Rubbery electrolyte makes for longer-lasting, safer EV batteries

Simple Mods Turn 3D Printer into Electrochemical Metal Cutter

Wire ECM built from an Ender 3

We’re not aware of any authoritative metrics on such things, but it’s safe to say that the Ender 3 is among the most hackable commercial 3D printers. There’s just something …read more Continue reading Simple Mods Turn 3D Printer into Electrochemical Metal Cutter

Machining Without Machines

It’s a luxury to be able to access a modern machine shop, complete with its array of lathes, mills, and presses. These tools are expensive though, and take up a lot of space, so if you want to be able to machine hard or thick metals without an incredible amount …read more

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Top Off A Dry Electrolytic

Making a capacitor is pretty easy. Just get two conductors close together. The bigger area you can get and the closer you can get them, the bigger the capacitor you can make. [BigClive] found some fake capacitors that were supposed to be very high value, but weren’t. Taking them apart …read more

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Amiga Repairs Put One Tough Little Machine Back in Service

Returning a piece of retro hardware to factory condition is generally a labor of love for the restorationist. A repair, on the other hand, is more about getting a piece of equipment back into service. But the line between repair and restoration is sometimes a fine one, with the goals of one bleeding over into the other, like in this effort to save an otherwise like-new Amiga 2000 with a leaky backup battery.

Having previously effected emergency repairs to staunch the flow of electrolyte from the old batteries and prevent further damage, [Retromat] entered the restoration phase of the project. …read more

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