LV Twin Screw mounting question.

[Chuck Nickerson]

It would appear the vise can be mounted with a bench leg being between the screws. Anyone know otherwise?

What's the minimum chop length over the vise screw spread? In other words: if the screws are separated 24" on center, the chop must be 28" long? 30"?

Thanks,
Chuck

[Narayan Nayar]

I've got 2 twin screws on my vise. Hopefully that qualifies me somewhat to respond. :)

http://www.narayannayar.com/images/workbench.jpg

There won't be any installation problem with a leg between the screws. It's a strange place to want a leg, I think, but I guess you could put dog holes in the leg and use it as a stop for panels you drop into the vise?

Minimum chop length--this is up to you. Obviously, it needs to be at least 24" + the screw diameters and then some, but the amount the chop extends past the bolts is up to you.

[Louis Reed]

What exactly do you mean by chop ? I am building a bench at this time and will be installing the same vice. When reading the instruction booklet, I don't recall "chop" in the text. did I miss this ?

Louis

[Joe Meazle]

Louis my understanding is that the chop is the movable wooden face of the vice. A lot of vises use the apron as the fixed jaw and chop would be the face that is retacted or advanced by the screw(s).

I am installing a LV twin screw now. and I have 21" centers (sligtly offset to avoid undercarage issues) on a 27" chop. If you are going to use the chain cover it will be the limiting factor. Send LV an email or give them a call they are usally very helpful. Heck Rob Lee himself has helped me out more than once.

[Louis Reed]

Thanks Joe, you cleared this up. My installation will not be a problem, I've allowed for the vice screws when laying out the legs and base. I should be ready the install both bench vices tomorrow.

Louis

[Chris Friesen]

Putting a leg between the screws is no problem...I just created a couple of blocks for the screws to mount to, and bolted them to the top. Basically the same design as you would use for wooden screws. (Take a look at slide 40 of the linked document for details...http://blogs.popularwoodworking.com/editorsblog/Download+A+Free+Slideshow+Of+The+Holtzapffel+Workb ench.aspx

As for size, I just went and measured mine and for 24" centers on the screws, the aluminum cover is 29" wide so that would be your minimum length for the movable jaw.

[george wilson]

Chop is an old English term for the jaw of a vise.

[Chuck Nickerson]

Thanks all. My bench, like Narayan's, is on Adjust-a-Bench legs, with a twin-screw face vise, a Tucker on that end, and hopefully Jameel's wagon vise as a tail vise. Needless to say, it gets a little crowded underneath, which leads to the questions. No, I didn't go completely nuts all at once. I've had the Tucker and Twun Screw for years. A loss of space is taking me from two benches to one.