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    Helium reserves sold

    I haven't bought helium in a while. I am hearing $625.00 per bottle that is filled to 2/3 capacity. What do you think this is going to do to prices? Only link I could find without signing in/up
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    ROBOFORMING: The Future of Metalworking?

    What do you think?
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    Water-jet-guided laser cutting technology

    Are any of you familiar with this tech? It looks like it has been around for a number of years. It is from Switzerland.
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    The Rottler Manufacturing Story

    This video is about Rottler:
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    OT- The story of Otto and Wilhelm Maisch and Maico motorcycles

    A story of family rivalry and sabotage in their business. Was it as bad as it is made out to be in this video?
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    New Shop Press

    It's a 200-metric-ton shop press. 220 U.S. tonnes. I bought it to install flanges on 4340 H.T. stub shafts. Here is the base plate for it. It is 4140 20" by 20" by 4 inches thick. I'm going to aim for 125-ton installations.
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    Adding a small amount of accuracy when hobbing helical gear pairs

    This is just my thought about adding a smidgen more accuracy when hobbing helical gear pairs. Below is a somewhat normal solution (using 30 through 75 change gears only one time each): Doing some quick math gives the actual angle that the change gears will cut (mathematically). It is...
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    OT- If you like the history of engines and early innovation you may like this

    The largest museum of its type. Huge variety of sprint car engines.
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    San Francisco Trolley Car Style Worm (Globoid worm) Drawn as a Solid

    I saw where Edge Precision posted a Youtube video about a rolling element and worm positioner. He used an alternative method to program the worm after finding some difficulty creating a solid model. I tried to see if I could do it in Rhino. How does your Program work for modeling a solid for...
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    An update to a free program for finding change gears

    It's aimed at older Barber-Colman machines. However, it'll work with others with some experimentation. What I've updated: > Saves the last selected machine and feed constants (added months ago) > Saves change gears to choose from for the next session (added months ago) > It now shows the feed...
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    OT- List of Industrial Sprocket Manufacturers

    We have a recurring need for ANSI 80 (1" pitch) double-row sprockets. - C hub - 30 teeth - We finish the bore to 3.125" A reasonable price and lead time would be nice. Any vendors/manufacturers that you can recommend? Thanks! -David
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    OT- The Curta -- best portable calculator in the world

    Any of you have experience with one of these: The hand-cranked calculator invented by a Nazi concentration camp prisoner | Ars Technica
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    Why Did the Industrial Revolution Start in Britain?

    Why Did the Industrial Revolution Start in Britain? (interestingengineering.com)
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    OT- Mechanical Aptitude Test gave in the late 1960s

    Does anyone remember a mechanical aptitude test given in the late 1960s? The one I took was for 9th through 11th graders. Grading was nationwide. In my case, you took it at the local Corps of Engineers. What was its purpose? Why the nationwide scoring?
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    OT- Math question about a ratio from an old SAT exam

    Give the answer in number of turns.
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    Is this gear hob math correct?

    Index constant: 24 Feed constant: 0.075 Number of teeth: 37 Normal diametral pitch: 20 RH helix RH hob; 1 thread Work TC C-constant: 25 Helix angle: 15.999999977526763773037108877645 Index gearing 25 x 24 x 1 = 600; 3 x 600 = 1800 with a factor pair of (40 x 45) (25 x 37) - 1 = 924; 3 x 924 =...
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    OT- Interesting new alloy that doesn't expand or contract with changes in temperature

    Extraordinary new material shows zero heat expansion from 4 to 1,400 K (newatlas.com) Will this compete with FeNi36 in certain applications?
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    Video about regrinding a dividing head worm

    He is grinding corrosion pitting out of the worm:
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