A reader recently wrote in with a great question, asking about Kant-Twist clamps. I have used these clamps before, although not very extensively, and certain benefits have become apparent.
I recently saw a video where they mentioned the kant twist clamp. Have you run across these before? Do you know what advantages/disadvantages they have compared to regular old c-clamps?
Looks like it is primarily used for welding, but are there other common use cases?
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I have one or two Kant-Twist clamps around here somewhere, but I don’t use them often. What I did was order one or two (I can only find one at the moment) in the size of C-clamp I use often – model 407 deep-jaw with 2-7/16″ max opening and 700 pound load capacity. From what I have seen, these clamps don’t replace C-clamps, but they can be very useful certain times.
Compared to C-clamps, Kant-Twist clamps are better suited for repetitive and specialty applications. They’re ideal for welding, but can be used for other types of work as well. I don’t weld, and have mainly used my Kant-Twist clamps for more basic workholding applications.
The primary difference between Kant-Twist clamps and C-clamps is in how they are adjusted and closed. C-clamps have a vertical screw that is parallel to the direction of clamping, Kant-Twist clamps have their screw in a perpendicular direction.
With C-clamps, there is sometimes a rotary motion, even if the pad is free to pivot and rotate. This motion can sometimes translate to the workpiece, causing it to move around as a clamp is being tightened. With Kant-Twist clamps, the closing motion is parallel. Kant-Twist clamps also have self-aligning rotating jaws with different profiles, such as flat and v-grooved.
Kant-Twist clamps are also said to be lighter and smaller than comparably sized C-clamps.
As mentioned, this is a clamp style I have used, but not a lot. If you use Kant-Twist clamps regularly, have you found other advantages (or disadvantages) that I didn’t touch upon?