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  • kendall
    replied
    You'll need pretty strong fingers to use those tweezers unless part of the grinding process is to thin the material down for a hinge.

    I see secondary ops post fold. Post-fold, the opposite side is out of the way, and fixture would be easier, could also use a knurl to both create the file and acts as a feed wheel for grinding the bevels.
    I know your design is not the same, but I see 7 different grinding positions, Perhaps re-arrange realign the tools that require grinding to reduce production steps.

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  • Rustybolt
    replied
    I'm with John and Jaakko on this one. Unless you have a seriously well equiped home shop. Even if lazer cut and engraved the secondary operations on 500 hundred a week would be a full time job without automatic equipment. Things like this are sometimes give aways from job shops that have the equipment and open time to manufacture their own advertisements.

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  • Alexei
    replied
    No I am open to jobbing this one out, just seems to me that the expensive part is going to be the die. Things like this are always stressful if the per part cost is good then I would job it out.

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  • Alexei
    replied
    Originally posted by atomarc View Post
    I'd check with a patent attorney first...this type of product has probably been approached a bazillion times and all this hoopla is for naught! While I'm always one for keeping manufacturing on this side of the ocean, this little do-dad screams 'China'.

    Hope I'm not being too negative because I wish you the utmost success in your endeavor.
    This product is none patent-able as there is no creative step in its invention i.e. it would be obvious to any metal worker that a bottle opener template could be folded. Anyway I'm changing the design a little so it will be mine.

    Loads of crap patents floating around that aren't worth the paper their written on. Wouldn't bother me at all arguing this design in a court of law because that's all it is.

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  • Mike Burdick
    replied
    Originally posted by Alexei View Post
    ... I would like to make 500 of these a week (well my design is slightly different but only slightly). ...
    Alex
    For what it's worth, here's a review of the item the OP is referring to ...

    The True Utility Keytool, is a one piece key ring tool that wraps around a standard door key.  Here are the specifications: Features: -...


    .
    Last edited by Mike Burdick; 04-30-2014, 03:03 PM.

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  • RichR
    replied
    Production of 500 or so per month would require a sizable (very sizable) investment in quality machines and tools.
    Actually, he was looking to knock out 500 per week.

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  • atomarc
    replied
    I'd check with a patent attorney first...this type of product has probably been approached a bazillion times and all this hoopla is for naught! While I'm always one for keeping manufacturing on this side of the ocean, this little do-dad screams 'China'.

    Hope I'm not being too negative because I wish you the utmost success in your endeavor.

    Leave a comment:


  • TGriffin
    replied
    Just outlining the processes, not the tools. And you are correct, electro-polishing is not something to attempt at home, but it's the least labor intensive way I know to get a great finish on a stainless part and it can be done after all of the other operations are complete. An alternative would be to tumble before grinding the cutters, but that would produce a different type of finish.

    Quite often it's more cost effective to job some processes out than try to do everything yourself. It would probably be more cost effective to job the entire part out if you have to purchase the equipment to make it, but I'm pretty sure that's not what the OP wants to hear.

    Tom

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  • dian
    replied
    so what kind of contraption (press) could be employed to punch that out fast? like several per minute?

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  • Jaakko Fagerlund
    replied
    Progressive punch and die, as many have suggested. Then tumble it to get smooth(er) finish and get rid of those nastu sharp edges, then grind/file/whatever to get your "tools" there and finally etch/engrave/silk-screen/something the markings on it.

    Takes some serious home shop to do it. Quite big tonnage required for the punching only, bending/folding doesn't take much and the die will be seriously expensive.

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  • Alexei
    replied
    Originally posted by John Stevenson View Post
    Then try to find an app to locate the people who could afford to buy a 3D stainless printed item.

    There must be loads of people queuing up to buy a $1,000 bottle opener
    wow someones lost there entrepreneurial spark, There must be loads of ways to blank this part out, plasma cut, laser it, punch, chemical mill it etc. Personally I like the ideal of a punch though I'm going to need a pro to advice me on it. Buddy it isn't going to cost £1000 a piece.. How much do your bikes costs anyway?

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  • Alexei
    replied
    Originally posted by dian View Post
    yes, punch and fold.
    That's what I'm thinking, I'd better go to a proper die maker and get his take on what press to buy. as for the writing on the peace I'll be able to screen print that on or use a pad printer. I'm looking forward to being able to post the finished product on this site.

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  • macona
    replied
    Originally posted by TGriffin View Post
    There is more there than meets the eye. I see a blanking die to cut the blank, a stamping die, laser or etching process for the lettering, a forming die for the shape, a heat treat process, a tumble deburring process, a few secondary operations to form the cutters and screwdrivers, all followed up by an electro-polishing step to make it pretty.

    Tom
    Lots of those steps can be combined. And I would skip electro polish. There are some seriously nasty chemicals involved there.

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  • macona
    replied
    Progressive punch and die. That should make most of it, then a grinding fixture for the cutter and a yag laser engraver for the markings.

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  • jlevie
    replied
    Making one of these could be done with "home shop" level machines. Meaning lots of hours of labor and sending the part out for laser marking. Production of 500 or so per month would require a sizable (very sizable) investment in quality machines and tools.
    Last edited by jlevie; 04-30-2014, 12:19 PM.

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