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Thread: Twin screw vice

  1. #16
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    I will have a look at op shops and see what I can find. Just had a look at eBay, for $42 I can get an apron that should have just about enough in it for two bits. Makes the full hide sound like better value though. As has been mentioned, I could use the remainder for all sorts of things in the shed, I don’t think I would need another for quite a while. I would prefer to have full length pieces than to mix and match smaller bits if I can. Thanks to all of you for the suggestions, very helpful! [emoji3]

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  3. #17
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    I have given the problem of syncronised twin screws some thought but I have not attempted what I am about to suggest.

    It seems to me that the easiest way to achieve this is to attach a couple of toothed pullies to the inside ends of your screws and run a toothed belt between them. You would need to calculate it carefully so the belt is fairly tight, and you would have to be careful not to swing off one handle tightening or the belt will surely jump, but they are cheap and require no lubrication. For the duty cycle on a vise the belt would last forever. The whole mechanism is hidden away under the bench so no ascetic impact.

    2c...
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  4. #18
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    Here's how I did it on one of my chainsaw mills.

    Chain.jpg

  5. #19
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    Yep, that’s how I would go about it too Bob, bicycle derailleur sprockets and small gears don’t take up much room under the bench and as you have done with the idler gear for tension. Not sure if a small tooth belt could go that small, I have not researched it. I still have not had a chance to use the vice other than a quick run over a piece of timber with the No. 7 when I first finished it, so I have not given it a practical work out as yet. It seems ok despite being a bit of a fiddle. I’m heading away for the week next week and will get in the shed the following week, I will see if I can give it a bit of a workout then. It will give me time to contemplate the hide/leather situation too.

  6. #20
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    Feb 2016
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    What about emulating how a boat rudder of yore worked with a steering wheel or a windlass.

    The mechanism of using a wound rope and guide is simple and the means of tensioning even more simple again.

    Arrrrr me harties!

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