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    Re: Looking for help on project yoyos 
    #21
    You jelly? I'm jam. Humphrey's Avatar
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    Man, I can't wait for engineering school...

    For showcase pieces, you could try acrylic as well. Landon Balk hand turns acrylic yoyos, and thy are by far the most eye catching yoyos.
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    Quote Originally Posted by mgodinez
    i like my bearings dry...shaken, not stirred.
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    Re: Looking for help on project yoyos 
    #22

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    I was thinking about that. One of the other projects is a magnifying bezel that uses an acrylic lens that the students cut out, so we have some some cast acrylic chunks lying around (and the correct polishing equipment).

    I did cut out a new aluminum version the other day, but I need to re-work the program. The part turned out decent but I think I can save a huge amount of time by using a larger boring bar and a larger drill. The program will be more complicated though so it needs to be done in such a way that people can sorta understand it.

    So this one doesn't concentrate the weight up on the rims as much as the high-end yoyos, but at least it's not concentrated around the bearing like my last ones were. Except I can't say too much about it since it isn't meant to use a bearing either, but I'll have to make those next.



    In the meantime I ordered some bearings, bushings, and response pads to use once I get workpieces that fit them...exciting
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    Re: Looking for help on project yoyos 
    #23
    You jelly? I'm jam. Humphrey's Avatar
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    What specs does this have?
    Theyo.com: The Final Frontier. To boldly troll where no troll has trolled before...
    Quote Originally Posted by mgodinez
    i like my bearings dry...shaken, not stirred.
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    Re: Looking for help on project yoyos 
    #24
    WildCat23's Avatar
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    How many of those dod you make?


    "If you choose not to decide, you still have made a choice"
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    Re: Looking for help on project yoyos 
    #25

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    I tried to make 2 of everything so we can leave demos scattered around the showcases and various boxes of finished parts. Everything up until now is fairly "raw" with machine marks and whatnot, not like the nice shiny ones that are worth their pricetags.
    When I get the design finalized I'll buff it up nice and pretty and have it anoed a good bright color to show off.

    Quote Originally Posted by Humphrey View Post
    What specs does this have?
    My "current" version aluminum:
    Diameter: 1.96" (49.7-mm)
    Width: 1.57" (39.9-mm)
    Mass: 67.1 grams

    The plastic "classic" ones I made...
    Diameter: 1.95" (49.5-mm)
    Width: 1.29" (32.77-mm)
    Mass: 64.9 grams

    I made a 2-piece plastic version for use with a bearing, and another plastic 1-piece that won't use anything special, both are similar mass although the two-piece would be slightly more heavy due to the metal hardware (set screw, bearing, inserts) I'd guess maybe another 4-5 grams.

    From my browsing earlier, it looks like most of the aluminum butterfly ones are slightly larger than 2 inches diameter, but I had to stick to that number since it's what we have the lathes set up to use. So I shrunk the width a little bit to maintain something of a ratio.
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    Re: Looking for help on project yoyos 
    #26
    Indeed good sir! J_scap's Avatar
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    one thing I noticed (if you haven't fixed this already) the bearing seat is a little.... off, judging by the cutaway view you had there. might I suggest doing something a bit like the one you see in plastic whip's post with the cutaway of the bearing seat he had? (I'm pretty sure it wouldn't be stealing because that kind of bearing seat is used by all the companies, and if I'm wrong then I retract my comment.)

    I do chain maille, you can see it here and here.
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    Re: Looking for help on project yoyos 
    #27

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    Yeah, I haven't really posted a diagram that shows a "good" bearing seat. The first aluminum yoyo I made that could hold a bearing but it would would be balanced on the axle instead of using a "seat" system. It's not so good since it'll make future disassembly a pain and also deform the parts slightly.

    What the yoyo manufacturers do is ultimately what I'm going to do too, but I haven't been able to cut it yet.
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    Re: Looking for help on project yoyos 
    #28
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    Maybe this little project will get you into yoyoing. Its a great community.


    "If you choose not to decide, you still have made a choice"
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    Re: Looking for help on project yoyos 
    #29
    You jelly? I'm jam. Humphrey's Avatar
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    I have a question about the tolerances. How do you tell the machine that you want tighter tolerances? It seems odd that the machine wouldn't try to get the perfect size, within its capabilities, every time. What gets adjusted?

    <---------- nosy nerd :P
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    Quote Originally Posted by mgodinez
    i like my bearings dry...shaken, not stirred.
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    Re: Looking for help on project yoyos 
    #30

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    I am a machine shop teacher and would like to start machining yo yos. We have tons of CAD CAM Software and would like to look at your model or working drawings for the part. Would you be willing to post your drawings or CAD files or send them to me?
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