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    Some interesting history

    https://www.bbc.com/future/article/20200615-the-record-breaking-jet-which-still-haunts-a-country?xtor=CS1-12-[FeaturesAugust20_X__house_ads]-[GNL]-[_]-[FeaturesAugust20_house]
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    Weld strengthAlan WatersMarch 19, 2017 · Shared with Your friendsFriends.500 x .035 4130 CM TIG welded with 0.012 OD 312 stainless filler under 10xmi

    The point of the post was to show how little weld it actually takes to make a weld on 4130 hold together. That small amount of weld held 4,800 Lbs. Divide that 4800 lbs. by say 60 joints and each joint is probably never sees more than 100 lbs. of pressure. If a person has any welding skills at...
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    Weld strengthAlan WatersMarch 19, 2017 · Shared with Your friendsFriends.500 x .035 4130 CM TIG welded with 0.012 OD 312 stainless filler under 10xmi

    .500 .035 4130CM Welded under 10x microscope using .012 316 stainless filler wire Tensiled at 4800 lbs. .035 wire shown for comparison. Your weld will likely hold.
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    Safety of steel tube fuselage

    https://flycorvair.net/2012/11/17/steel-tube-fuselages-safe-planes-and-250mph-accidents/
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    Filing weld joints

    Grinding can produce stress risers. [Places where cracks can start] Don't do it. But if you do, polish out all of the grind marks.
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    Glider to 76,000 feet.

    https://www.airbus.com/newsroom/press-releases/en/2018/09/airbus-perlan-mission-ii-glider-soars-to-76-000-feet-to-break-ow.html...
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    Making a molded fuselage

    Being a welder, [retired] I have never had interest in composite construction. I did find the video fascinating however.
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    Making a molded fuselage

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    Age of Aerospace

    If you have never seen this, you are missing some excellent history. Not just aircraft, but space, GPS, smart bombs ect.
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    Age of Aerospace

    https://theageofaerospace.com
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    Using Magnesium Tubes

    If I decided to build an airframe of magnesium I would not worry at all about burning metal. The real fire hazard is the gas. Magnesium is welded in industry on a daily basis.
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    NO TOW STRAP AND FOUR WHEEL DRIVE ON THE ISLAND?

    I just can not imagine not dragging this thing out of the water.
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    interesting Welding Video

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    Using Magnesium Tubes

    This article is about bicycles but it is a informative article about magnesium tubing. http://www.precisiontandems.com/cat_files/paketa/paketamagnesium.htm May be of interest to part 103 builders.
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    Welding vs triangulated brackets with rivets

    As a side note. One of the Zenith aircraft, the 601 I think, does not use hinges on the ailerons. The wing top skin is extended from leading edge to the trailing edge of the aileron and in fact serves as a hinge by flexing the top skin along the entire length of the aileron. It looks and sounds...
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