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406's New Toy... I Mean Tool

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  1. #1
    406Refining started this thread.
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    406's New Toy... I Mean Tool

    Hey everyone,

    Hope your scrapping is going well. For the past 6 months I've been working on building my own shredder. If you look online for one it's going to take a minimum of $8-$10K. I decided it would be easier for me to design and build my own one. After a few months of designing and revising I was ready to get the parts cut and put together. It took more than expected because I had more of an expense on milling the axels. So far this project was planned to be at $3k at the most. I am now $500 over that, but it's almost done. Last night I assembled the unit for the first time and I gotta say, It's looking good. I thought I'd share a few pictures of the parts. I'm doing one hard push today and tomorrow to finish shredder. Once it's running I will definitely post a video because after all, who doesn't like a good video of stuff being shredded up?

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    406 awesome build.

    Looking forward to the video.

    I was about to leave the forum , but this thread will give it a new life well worth keeping an eye on.

    Thanks for sharing.

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    I was going to ask about that- it looks a lot closer to being ready to shred than the parts were when I last saw you. So, does this mean that you want me to dump.... errr "bring" those printers to you now?
    More than Scrap Value Shipment Tips: http://www.scrapmetalforum.com/scrap...tml#post242349

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    406Refining started this thread.
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    Quote Originally Posted by matador View Post
    I was going to ask about that- it looks a lot closer to being ready to shred than the parts were when I last saw you. So, does this mean that you want me to dump.... errr "bring" those printers to you now?

    This one is almost done. Hopefully I'll have it ready by the end of the week. As soon as I run some materials through it to see how well it works I'll have a good answer on the printers. Once all of the "undocumented features" of the current one are worked out I'll be starting on the big one for processing larger stuff.

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    406Refining started this thread.
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    Well. There have been a few undocumented features to the unit like that it tears itself apart. I mean who doesn’t love a piece of equipment that tears itself apart? I’ve reinforced the unit for a third time. On the last round the gear box actually locked up. It didn’t damage the unit, but for a gearbox that has 420 foot pounds of torque that’s a concerning thing. Especially since it was a fairly thin piece of steel that caused it. I have the unit set up again so I’ll be doing some load testing tonight. If it does not go according to plan I’ll be ordering another $500 in blade spacers and $150 in gears. Gotta love the load testing side of things

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    Quote Originally Posted by 406Refining View Post
    I mean who doesn’t love a piece of equipment that tears itself apart?
    That's how the neighbor has always farmed. What can go wrong, right? At least it locking up didn't blow the gearbox out. I haven't seen your machine together, so no clue if you could put a slip clutch or something in there maybe?

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    Last edited by blackgold12; 01-12-2020 at 04:19 AM.

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    Quote Originally Posted by blackgold12 View Post
    406 awesome build.

    Looking forward to the video.

    I was about to leave the forum , but this thread will give it a new life well worth keeping an eye on.

    Thanks for sharing.
    To bad it doesn't work and I guess we now know why one would set us back $8-$10K
    Last edited by blackgold12; 01-12-2020 at 04:50 AM.

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    A lot of these types of machines will have a mechanism that will reverse the spin. I assume there is some sort of sensor that detects when there is a jam.

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    Quote Originally Posted by blackgold12 View Post
    To bad it doesn't work and I guess we now know why one would set us back $8-$10K
    I was really really hoping it would go together perfectly on the first round, but I'm only $3,500 in so I've got some wiggle room before I hit the $8k mark

  19. #11
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    Quote Originally Posted by mthomasdev View Post
    A lot of these types of machines will have a mechanism that will reverse the spin. I assume there is some sort of sensor that detects when there is a jam.
    I've seen the reverse spin controller that many shredders have and that is something that I plan to put on the bigger shredder (possibly this one too). My dad is helping get that part designed/built since he's an electronics design engineer with 35 years of experience. He looked at it and said it would be easy to do. I have never designed a circuit board in my life so it's really awesome that he's helping on this project!

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    Honestly, if you end up spending $8000 on this compared to an $8000 commercial shredder, I'd rather have the one I built. Sure, the "professional" one should be perfect out of the box. But, if it took me an eternity and the same amount of money to build my own, I'd know WHY everything worked the way it did. If I ever build one though, the Lord knows that I'll end up with some Rube Goldberg machine that looks like it should belong on a Ukrainian YouTube channel....

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    Quote Originally Posted by mthomasdev View Post
    A lot of these types of machines will have a mechanism that will reverse the spin. I assume there is some sort of sensor that detects when there is a jam.
    With a Programmable logic controller AKA PLC
    https://en.wikipedia.org/wiki/Progra...gic_controller

    A range of manufacturing and production processes rely on current-operated relays to provide a continuously adjustable trip-current setting.

    They are able to protect mechanical apparatus from jam-up or other overloading conditions that result in measurable increases in motor current.

    Functionally, they sense current levels and provide an output signal when a specified current level is reached. Current-sensing relays are used to:



    • Signal high-current conditions, such as a clogged grinder.
    • Identify low-current conditions, such as a pump that has encountered a low-water condition. Sense the current a motor is drawing to feed the current to a programmable logic controller (PLC).
    Last edited by blackgold12; 01-12-2020 at 03:54 PM.

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    406 the shears will have ground surfaces to assure the edges are nice and sharp as they wear they're sent out to be resurfaced


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    From the swather I wrecked for the engine there was a pair of these planetary reductions, when the brake band is applied the direction of rotation reverses.

    Spring pressure on the friction disk could be adjusted to turn it into a slip clutch.




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    Quote Originally Posted by blackgold12 View Post
    From the swather I wrecked for the engine there was a pair of these planetary reductions, when the brake band is applied the direction of rotation reverses.

    Spring pressure on the friction disk could be adjusted to turn it into a slip clutch. If you would prefer to make the 9 hour drive to pick it up in person, I'll assemble a large care package to take home with you.

    Hydro static drive pump and three Parker motors and more will be disposed of, If you require accommodation during your visit there's a hotel nearby at Sandy Lake MB.

    For the cost of freight I'll gift you one of the planetary hubs, your not that far away from my location.

    Last edited by blackgold12; 01-15-2020 at 02:32 PM.

  25. #17
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    "Not far". LoL, 2000kms is the length of NewZealand !

    America must be HUGE !!

    ( I can drive across NZ in about less than 4 hours.)

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    Quote Originally Posted by eesakiwi View Post
    "Not far". LoL, 2000kms is the length of NewZealand !

    America must be HUGE !!

    ( I can drive across NZ in about less than 4 hours.)
    Coast to Coast 6,169 km, Canada has a much larger land mass than our neighbor to the south of us


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    Out here, we look at large distances like it's nothing. Many people in Wyomign will drive 100-200 miles to go to Billings for weekend shopping. It's just a normal thing out here


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