Posted by John Smith 47 on 07/05/2021 00:38:08:…
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However for me I want something that will robustly clamp onto a part when I release my hands.
i.e. Sometimes it's about stopping a hidden nut from turning at the other end of a bolt you are turning. And at other times it's about literally using the the tool as a precision vice to hold a part (using a larger vice to hold the base).
That's two completely different jobs, requiring completely different tools. Trying to do both with one will inevitably lead to compromises that make it less than ideal for either. No wonder the tool you are looking for "has not been invented yet".
For your first scenario, if you absolutely can't use a proper spanner, and can't bring yourself to use Mole Grips AKA Vice Grips in a pinch, you need a locking wrench like below. Combines a shifting spanner with a Mole Grip locking handle mechanism. The jaw stays parallel (withing the necessary working clearances of a shifting spanner jaw) and it clamps on tight.The Vice Grip action acts on the adjusting screw, not the jaw directly.
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Then for your second scenario, holding small parts firm while work is performed on them, perhaps while itself being held in a larger bench vice etc, the correct tool is a toolmaker's clamp. They come in a wide variety of sizes and styles, some with one leg extended longer to clamp in a bench vice, others with one screw only so access to the other side is open.
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You are wasting your time searching for a magical unicorn tool that will do both these functions well. Use the right tool for the right job. Obviously the locking wrench could be used to hold small parts but the tapered handle profile will not clamp well in a vice. And the toolmaker's clamp could be clamped on to a nut but needs more access space than the proper spanner for the job.
Personally, I use long-nosed Vice Grips to gently hold a nut to get it started on an obscured bolt behind something else etc where fingers won't fit, then once its on the thread, the proper spanner takes over. Where Vice Grips will fit, a spanner will too. And I still have the toolmakers clamps, including a larger flatter one with one long leg, I made as an apprentice. I don't use them that often, but when you need them they are gold. Buy a set of two each of two, four and six inch models. They are also very handy for holding small parts on the drill press.
Edited By Hopper on 07/05/2021 05:31:44
Edited By Hopper on 07/05/2021 05:34:31