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  • How to build an insanely bright LED flashlight!

    "experiment with making the beam narrower"To make the beam narrower, you shall not use the reflector from the lamp.The lens you put on the LED already focuses the beam. Usually the lenses can be chosen to have a beam 120° wide, or 90° wide, or less. So, first step, just change the LED lens with one with a narrower beam angle.Second, the reflector of the old lamp was intended to be used with an old-stile car headlight which spread the light all over around the light bulb (while the LED send the beam almost from a flat surface): that's why the LED car headlights sold to replace old lights are arranged with many LEDs around "fake light bulbs" structures. Reflectors are intended to be more-or-less parabolic, with the bulb about in the focus. So, the reflector you...see more »"experiment with making the beam narrower"To make the beam narrower, you shall not use the reflector from the lamp.The lens you put on the LED already focuses the beam. Usually the lenses can be chosen to have a beam 120° wide, or 90° wide, or less. So, first step, just change the LED lens with one with a narrower beam angle.Second, the reflector of the old lamp was intended to be used with an old-stile car headlight which spread the light all over around the light bulb (while the LED send the beam almost from a flat surface): that's why the LED car headlights sold to replace old lights are arranged with many LEDs around "fake light bulbs" structures. Reflectors are intended to be more-or-less parabolic, with the bulb about in the focus. So, the reflector you are using is doing almost nothing to control the beam. Good news, it is easy and cheap enough to draw a parabola with the needed geometry, and DIY a cheap parabolic reflector. Use Google for ideas, it's plenty of projects that can be modified for your necessity (avoid the ones that are not explaining the geometry involved. Usually are used for solar ovens).Also, I saw some cheap, plastic, Fresnel lenses sold at "maker fairs" for doing science experiment that can be used to focus the beam of the LED. You can look on E-Bay for the cheaper ones. Just place the LED in the focal spot of the lens (you can measure the actual focal length just by focusing the Sun light on the focal spot). You shall match the right LED diffuser lense with the right beam angle to illuminate the Fresnel lens without wasting light. Just keep experimenting.Let me know if you go with the Fresnel lens or a DIY parabolic reflector, and the results.

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  • ClaudioP34 commented on fs woodworking's instructable How to Hide a Screw1 week ago
    How to Hide a Screw

    Indeed, too many "very old tricks" use to be jealously kept secret tricks by experienced woodworkers. Thank you very much for sharing, it's the first time I see it!

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  • ClaudioP34 commented on In The Kitchen With Matt's instructable Easy Pumpkin Muffins3 months ago
    Easy Pumpkin Muffins

    Thank you very much, I'll try the recipe next weekend and I'll let you know! :)

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  • ClaudioP34 completed the lesson Welcome! in the class Woodworking Class4 months ago
  • Homemade Ice Cream - 3 Ingredients - No Ice Cream Maker

    Yes, for centuries the snow was mixed to fruit juices (expecially in Sicily, a warm island with a snow-topped volcano, mount Etna). For a deeper story:http://www.meetup.com/it-IT/sicily/pages/4804592/G...In a lot of old Italian palaces there are deep underground "snow caves" ("conserve della neve") that were used to maintain the snow during summertime.Sorry Matt if we are going OT :) Meanwhile, I don't remember how much fat there is in the American whipping cream (more than in the Italian, I remember), but your simple recipe is more similar to the Italian "gelato" recipe (which uses milk, not condensed milk) tha to the American "ice cream" (with custard and butter). I'll try it next summer :)

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  • ClaudioP34 commented on In The Kitchen With Matt's instructable Easy Pumpkin Muffins4 months ago
    Easy Pumpkin Muffins

    I would like to try it, but I have fresh pumpkin, not canned one. How can I use fresh pumpkin? I think I shall cook the pumpkin (in a steamer or in the oven) before, then put it into a blender before using it in the recipe. It seems to me that canned pumpkin is pre-cooked, am I right?

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  • Homemade Ice Cream - 3 Ingredients - No Ice Cream Maker

    Really, that's really how the ice cream was made in the XVI century, when, in Forence, Giuseppe Ruggeri won a contest for a “singular plate that had never been seen” to be served to Caterina de' Medici (future wife of king of France, Henry II). His recipe was a sorbet made with snow (that the noble families accumulated in "ice caves" near their palaces), sugar and "flavours" like juices from fruit, and flavoured water. Some years after Ruggeri, the architect Bernardo Bountalenti added also milk, cream and eggs to the snow. Nothing to add to the recipe, but maybe a nice story to tell your mom (maybe she did not even know she was a "gastronomical archeologist") :-)

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