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Thread: Square hole digging tractor attachment - GIF

  1. #11
    Supporting Member Saltfever's Avatar
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    Quote Originally Posted by neilbourjaily View Post
    I don't know why a drilled square hole would be useful.
    Often required when a post is supporting a cantilever load. (e.g., a free swinging gate). A round post will eventually sag as the soil is displaced away by the force acting on it. A square hole (actually, the flat side) has a lot more surface area reacting the lateral force. "Square" is frequently specified by soil engineers but often ignored by contractors simply because they only have a round drill or auger. Nobody wants to spend for hand digging.

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  2. The Following 2 Users Say Thank You to Saltfever For This Useful Post:

    neilbourjaily (Mar 1, 2020), Toolmaker51 (Jun 1, 2020)

  3. #12

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    Engineering was VERY lacking on this design as the “digger” should have thrown the dirt away from the operator! As for usefulness......graves!

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  4. #13
    Supporting Member hemmjo's Avatar
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    Quote Originally Posted by Wildwilly View Post
    Engineering was VERY lacking on this design as the “digger” should have thrown the dirt away from the operator! As for usefulness......graves!
    I was thinking along similar lines when it first started to dig, but the deeper it got the more the dirt went behind the machine, away from the operator.

  5. #14
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    old kodger's Tools
    and after all that, the bloody hole is round at the bottom.

  6. #15
    Supporting Member Toolmaker51's Avatar
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    How does engineer "A" get all that mechanism designed; bypassing a helical tooth arrangement or rotating the other, more logical direction, letting the chassis aid stability?
    Sincerely,
    Toolmaker51
    ...we'll learn more by wandering than searching...

  7. #16
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    old kodger's Tools
    I wonder what the life of the chains is, it looks like good grinding paste



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