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  • BaronJ
    BaronJ reacted to PeterT's post in the thread Shop T-nuts with Like Like.
    Try this sketch. I'm going on a limb here. LEFT = by overburden I mean the stress area that bolt force resolves into OVER the element...
  • BaronJ
    BaronJ reacted to L98Fiero's post in the thread Shop T-nuts with Like Like.
    I've done that, it worked for me.
  • BaronJ
    BaronJ reacted to Susquatch's post in the thread Shop T-nuts with Like Like.
    Yes, I see that now. But see my discussion of that. Without a relief on the top of the T-Nut, the length is of no value because the nut...
  • BaronJ
    BaronJ reacted to Susquatch's post in the thread Shop T-nuts with Like Like.
    Good stuff Rudy. That's a bit tighter than I'd feel comfy about with most cast iron beds. But I think your assumption about the higher...
  • BaronJ
    BaronJ reacted to PeterT's post in the thread Shop T-nuts with Like Like.
    See clarification. I just drew a blue outline box of what would be a long T-nut to the end of the clamp Agree, but it is important to...
  • BaronJ
    BaronJ reacted to Susquatch's post in the thread Shop T-nuts with Like Like.
    I did a little digging for you about the variability of the strength of cast iron. This is what AI says: The tensile strength of...
  • BaronJ
    BaronJ reacted to Susquatch's post in the thread Shop T-nuts with Like Like.
    Not important to the failure mode. In reality that up force does not extend beyond the T-Nut and is centered (and highest) at the...
  • BaronJ
    BaronJ reacted to RobinHood's post in the thread Shop T-nuts with Like Like.
    So I went and checked because this great discussion had me thinking… My Gerardi clone is held down with 4 clamps supplied by the...
  • BaronJ
    BaronJ reacted to PeterT's post in the thread Shop T-nuts with Like Like.
    I drew up a stub section of my Bison 5" vise base plate & mated to stock Bison clamp on my 935 mill table. So pretty close to scale...
  • BaronJ
    BaronJ reacted to RobinHood's post in the thread Shop T-nuts with Like Like.
    I think a lot of work holding problems arise from not using enough points of contact. More is better. Folks sometimes ask too much of a...
  • BaronJ
    BaronJ reacted to Susquatch's post in the thread Shop T-nuts with Like Like.
    That's always going to be an issue. A good clamping design doesn't necessarily go "where they have to go". It's up to the user to choose...
  • BaronJ
    BaronJ reacted to Susquatch's post in the thread Shop T-nuts with Like Like.
    Yup. But always less than the screw force. Also, the primary problem doesn't show up at the ends of the clamp. It shows up where the...
  • BaronJ
    BaronJ reacted to PeterT's post in the thread Shop T-nuts with Like Like.
    Thats exactly what I was trying to convey with this Bessey clamp markup example. The arrows are showing the relatively long distance...
  • BaronJ
    BaronJ reacted to Susquatch's post in the thread Shop T-nuts with Like Like.
    @PeterT - Good idea to limit torque via the human limitations of using an Allen key. Unfortunately, most clanp sets use hex head screws...
  • BaronJ
    BaronJ reacted to Susquatch's post in the thread Shop T-nuts with Like Like.
    Yes, we looked at on-line ratings. It's a quagmire. Here is the problem. Cast iron quality varies all over the map. While Bridgeport may...
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