![]() SHays on Powder Your Prints For Baby-Smoothness.Miles on Input Device Gets New Input Device.Miles on This Week In Security: WebP, Cavium, Gitlab, And Asahi Lina.Rob on That’s Not A Junker… That’s My Generator.Evaprototype on Hackaday Prize 2023: Computer Vision Guides This Farm Mower.Lee on Getting Geared Up For Home Powder Coating.Keebin’ With Kristina: The One With The Busy Box Macro Pad 7 Comments Has this been thought of? who has attempted this? In space such an apparatus could be huge with a ring of fishing rod like materiel and very little air pressureĪ drum head like circular stretching apparatus can be used to evenly stretch the Mylar before gluing it to the ring to possibly get a telescope grade mirror if the Mylar is consistent enough and the stretching even enough. The degree of air pressure determines the focal point of the mirror which can therefor be adjusted at will by adjusting air pressure. The pressure that the transparent and reflective Mylar disks exert as they stretch due to the inflation of air between them imposes an equal and opposite force on the ring preventing it from warping. Now the mirror can be used right through the transparent Mylar because the transparent Mylar is not in the reflective Mylars focal plane Why multiple ports? To keep the ring equally stable around its circumference. Instead of using a flat surface use a ring and stretch transparent Mylar across one side and reflective Mylar across the other side, then pump in air between them from a great many tiny multiple ports in the ring. ![]() ![]() Instead of using a fixative to convert this air pressure induced parabolic curve into a permanent solid mirror why not just take this same idea but simply maintain air pressure and use the mirror as is? Posted in Misc Hacks Tagged cooker, death ray, dish, fiberglass, mylar, parabolic mirror, pressure forming, reflector, space blanket Post navigation We doubt this process can be optimized enough to produce astronomy-grade mirrors for visible light, but it still has a lot of potential applications. Maybe a fiberglass radio astronomy dish could be pressure-formed directly with a rig like this? A little edge support for the resulting shiny taco shell and the mirror was capable of the required degree of destructive potential. ’s first attempt at supporting the film with spray foam insulation was a bust, but the later attempt with fiberglass mesh worked great. After curing, a few puffs with a bicycle tire pump forms the curve and stretches the film even smoother. The metallized Mylar space blanket, stretched across a wooden frame to pull out the wrinkles and folds, is applied to a circle of epoxy on the platen. A sheet of PVC with a recessed air fitting forms the platen. We’ve covered pressure-formed plastic domes before, and this process is similar. Pressure-forming was a great choice for ’s mirror. But a big, shiny mirror for your solar death-ray needs is another matter, which is where this pressure-formed space blanket mirror might come in handy. Whether you’re building a microwave antenna or a long-distance directional microphone, suitable commercial dishes aren’t that hard to come by. Applications & industries served include aerospace, commercial lighting, food processing, medical, ventilation, prison equipment, recreational boating, automotive components, telecommunications, cryogenics, religion, pollution control, venturis, bases, pots, parabolic reflectors, hoppers, bottoms, rings, ends, basins, fans, bowls, hemispheres, shells, guards, holders, canopies, cans, tubing, housings, kettles, spheres, stands, caps, tank bottoms & heads, pails, cones, urns, missile components, containers, pans, can & case covers, wheels, trays, shapes, cups, pontoons, cylinders & plates.Parabolic reflectors are pretty handy devices. Professionally skilled in prototype jobs, small part quantities & large production runs. diameter, maintaining rigorous tolerances up to plus/minus. Capable of metal spinning blanks up to 72 in. Flexible craftsmanship displayed in materials such as inconel, hastelloy, titanium, stainless steel, steel (cold rolled & hot rolled), aluminum, copper & brass. An industry certified in metal spinning of parabolic reflectors, CNC metal spinning of parabolic reflectors, spun tubing of parabolic reflectors, precision shape forming of parabolic reflectors & deep drawing of parabolic reflectors.
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