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Technical Cribbing Boxes

Discussion in 'The Hokey Ass Message Board' started by rockable, Jun 24, 2020.

  1. 41rodderz
    Joined: Sep 27, 2010
    Posts: 6,540

    41rodderz
    Member
    from Oregon

    Blue Ones are nice.
     
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  2. Love the 2x4 cribbing.
    12 inches high and very stable.
    As others have stated, perfect for panel replacement and fitment as the suspension is loaded.
    I always used large heavy duty jack stands, but I get a little nervous after laying under a car for hours and thinking about getting squished like roadkill.
    Mine were free to build as the lumber and deck screws were given me.
    Highly recommend.
     
  3. 1953naegle
    Joined: Nov 18, 2013
    Posts: 281

    1953naegle
    Member

    Don't have a picture, but we have some 12" long chunks of 8" tall I-beam cut to set cars on. Gets it just high enough to comfortably "creep" under the vehicle, and they won't colapse anytime soon. There are some angle iron pieces on the ends to keep tires from rolling off.
     
  4. Hot Rods Ta Hell
    Joined: Apr 20, 2008
    Posts: 4,670

    Hot Rods Ta Hell
    Member

    I'm using two free sets of rims stacked two high at each corner. 15" laying flat on the slab, on their sides with a 14" laying flat on it's side on top of the base 15's. The 14's tuck inside the 15 lips so they won't slide off.
    Raises the vehicle about 12". Stack them behind the garage when not in use.
     
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  5. brading
    Joined: Sep 9, 2019
    Posts: 704

    brading
    Member

    I made timber cribbing boxes similar to #1 picture out of scrap timber 6" and 10" high. Prefer to use them rather than jacks when possible. These are the floor jack extensions I made up 4"and 6"high and stackable on on top of the other, there is a pin at the bottom that locates them.
     

    Attached Files:



  6. the ones blue made are great as they stack and take up little space in the shop when not in use

    but they are the same design as forklift stands
    I got mine for nothing as the engineering tag came off and the customer that had them did could not use them anymore according to there in-house safety committee.
    About $400 a set up here
    I also have a set of heavy duty stands

    the cropping works very well when it’s built correctly like in the OP’s first post.

    blocks stacks up, cinder blocks , and crap like that work too, but it’s just asking for trouble.

    B5C95DBA-253F-4B42-B425-20D4A96B3865.jpeg 6021BB62-C562-4C0B-979E-6D05E0B6F37B.jpeg
     
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  7. Blue One
    Joined: Feb 6, 2010
    Posts: 11,459

    Blue One
    ALLIANCE MEMBER
    from Alberta

    That’s sketchy looking.


    Even with the jack stands I wouldn’t be comfortable under that car.

    Hope that J Hansen doesn’t find out the hard way.

    That looks a little scary Danny, I wouldn’t have crawled under the wagons body sitting like that.
     
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  8. atch
    Joined: Sep 3, 2002
    Posts: 5,625

    atch
    Member

    The ones rockable made and showed (see below) look very good to me. I made similar ones but being the scaredy cat I am I included side-to-side 2x4's in all the lower openings also. That way the entire weight of the car is being transferred directly to the floor without relying on the 2x4 strength in the span. I wouldn't hesitate to drive a bulldozer over mine. I actually have two sets of 4 each. One set was built in the early 70's and still function perfectly. The other set is approximately 20 years old. They have always been indoors and never been wet; b-t-w.

    rockable: ya done good son. Thanx for showing us. I think I've perused all the other threads on here about cribbing (at one time or another) and I like yours as well as anyone's.

    Note: I'm making NO reference to any other than wooden ones. If I had blue one's skill set I might try some steel ones. However, I'll NEVER crawl under anything I would weld up. I'm not that good of a welder. Like they say: "just because you have a welder does not mean you are a welder."

    [​IMG]
     
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  9. I like the idea of the 2x4 cribbing. I can easily do that--being '6 5" and old, I can't work bent over like I used to be able to do. Will definitely do this when I get going on my '55 Ford. You couldn't pay me enough to crawl under a car on concrete blocks, even with the blocks sitting on a very level concrete floor. When I was about 15, my '38 Ford pickup rolled off of concrete blocks stacked 3 high--seconds after I had crawled out from under it. Close call. Around that same time, a man my father worked with at the Atlanta Ford plant got crushed to death when a Model A he was working on fell off of concrete blocks.
     
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  10. 41rodderz
    Joined: Sep 27, 2010
    Posts: 6,540

    41rodderz
    Member
    from Oregon

    All you have to do to prove a point of how cinder blocks are not good for health , is take a block and hit it with a hammer and they will crack and break apart . Now imagine a cars weight on a block.
     
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  11. I use jackstands and ramps but I always throw a spare wheel and tyre under the car when I need to work under it


    Sent from my iPad using The H.A.M.B. mobile app
     
  12. Nostrebor
    Joined: Jun 25, 2014
    Posts: 1,278

    Nostrebor
    Member

    Mine are made of 2x4 internal construction, with studs and plates like you would frame a house, and then wrapped in AdvanTech with 2 layers at the load bearing platform. I raised the sides to capture the car, and made them fairly wide for lateral stability, but can als add on some outriggers that I made if needed. All glued and screwed. I use them with the 2 post so I can load the suspension, so most of the time the lift is also there to support the car.

    I ran a set of calculations on them and one box will support much more load than the entire car can apply if I could balance it on there. Lateral stability is also well within the design calcs, but there is still more risk there than gravity. Outriggers are ideal if you are not supplementing with a secondary device like a lift. Stability is similar to working on a car properly supported on a 2 post lift. If you really, really wailed on something you could start to move this around, but you would have to want to really bad.

    Don't mind the dust... it get's pretty dirty in the shop, so we have to wash the cars every so often while we are working on them. rsz_20170805_185949.jpg
     
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  13.  
  14. 51504bat
    Joined: May 22, 2010
    Posts: 4,755

    51504bat
    ALLIANCE MEMBER

    bobss396, y'sguy and WalkerMD like this.
  15. indyjps
    Joined: Feb 21, 2007
    Posts: 5,377

    indyjps
    Member

    Screws will shear off, nails will bend and are much more resistant to shear. Buy ring shank nails of you have a concern of it backing out.
     
  16. goldmountain
    Joined: Jun 12, 2016
    Posts: 4,442

    goldmountain

    Wood is getting a bit pricey but I remembered shipping crate wood from work that was short sections of 2x10 and 2x12 that was available and best of all, free. IMG_1500.JPG
     
  17. cfmvw
    Joined: Aug 24, 2015
    Posts: 977

    cfmvw
    Member

    I have built similar ones to these but with extra 2x4 material in the middle, and nailed/glued them together. Had a set that I cut a radius in the top piece that fit the front axle beam and rear torsion housing of my VW and an extra wide base, but my son absconded with them. They were perfect for pulling motors and transaxles.
     
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  18. Guy Patterson
    Joined: Nov 27, 2020
    Posts: 372

    Guy Patterson

    Shipping crates and pallets are great and free. My neighbor has a pallet that I am going to get to use for some new cribbing as I tossed my old ones when we moved
     
  19. just be mindful with skipping crates , skids , and palettes

    some are made out of hard wood and are almost indestructible.

    some are made out of some kind of wood that’s a notch or two above styrofoam.
     
  20. Rocky72
    Joined: Nov 22, 2008
    Posts: 207

    Rocky72
    Member
    from Pa.

    Be careful with those because if the 2 x 12 would split with the grain it will collapse . Be safe .
     
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  21. Dino 64
    Joined: Jul 13, 2012
    Posts: 2,400

    Dino 64
    Member
    from Virginia

    Left over 2x4’s from the scrap pile 3BF077C0-5464-449D-803B-D2A1BD620AB3.jpeg
     
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  22. I always do this but with a solid block of wood....
     
  23. ronzmtrwrx
    Joined: Sep 9, 2008
    Posts: 1,137

    ronzmtrwrx
    Member

    C109BE57-5DC2-4713-9587-9C8E394257A9.jpeg F599BF1E-5DAA-4733-9507-9163D3EB69DD.jpeg
    Built these out of some leftover 2x8’s. F-26 on all mating surfaces and deck screws. 3/4 plywood on the top. They’re plenty stout. They could stand to be a little taller, so I’m going to make another set with 2x12’s as soon as lumber prices drop. Lol.
     
  24. I like!! Do you have the dimensions?

    Ben


     
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  25. Dino 64
    Joined: Jul 13, 2012
    Posts: 2,400

    Dino 64
    Member
    from Virginia

    Those handles are handy too :)
     
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  26. ronzmtrwrx
    Joined: Sep 9, 2008
    Posts: 1,137

    ronzmtrwrx
    Member

    I’ll send them tomorrow when I get to the shop.
     
  27. Same here, learned that one from dad.
     

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