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Hi @0225556559,
Welcome to the Bunnings Workshop community, it is fantastic to have you with us.
If you are referring to the Ozito 2100W 254mm 10" Corded Double Bevel Sliding Mitre Saw - SCMS-2125, then the clamp is operated using these two knobs.
The one on the left in the above photo allows the black arm to move up and down the cylindrical rod. This is used for spacing the clamp based on the workpiece. It should be adjusted first to get the round plate on the bottom of the clamp close to the workpiece.
The knob on the right is connected to a thread, which, when rotated, will tighten the clamp down on the workpiece.
So, to summarise, use the one on the left first to get things close, then tighten it up and use the one on the right to tighten the clamp down on the workpiece.
If there is another aspect that you are not sure about, please let me know so I can advise further.
Jacob
Hi @0225556559,
The rod is held in place by tension when the clamp is tightened down on the workpiece. When the clamp pushes down on the workpiece, this force will push the black arm backwards towards the cylindrical rod, which will in turn push the top of the rod backwards, and the bottom forwards, which will lock it in place in the slot.
It's a bit difficult to explain in words, but if you put a piece of timber on the mitre saw and tighten the clamp down, you should be able to see/feel what is happening.
The design is so that you can quickly and easily move the clamp from one side of the blade to the other, depending on the direction of the bevel. It's not meant to generate a massive amount of clamping force, just enough to hold the workpiece in place so that it doesn't move while cutting.
Let me know if you have any issues, I can certainly assist further if required.
Jacob
