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Mounting a Vise to a Work bench

CJM8515

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So Ive come to a crossroads. I built a nice heavy duty work bench and id rather not drill holes in it to fit a vise as I have 3 different ones Id like to use. An old craftsman 3 1/2", a pony 6" and an unknown made in japan 4"

Bench is 2x4 construction with multiple cross members and 2 3/4 pieces of ply with press board sitting on top. The frame of the bench is made of (2) 2x4 bolted and screwed together to make the legs and (2) 2x4 to make the frame itself.

I think the following may work:

Taking this adapter (tossing the included hardware and supplying my own) and bolting it to the bench

Then using this vise mount

Id mount the adapter under the bench using carriage bolts and recess them enough to keep the top flat. But I wonder how strong it would be, as im not introducing a downward force to the mount when say hammering something on the anvil portion of the vise (lets say fairly hard for sake of argument). Id also have to cut the 2x4 frame and reinforce that area so I can fit the vise mount.

Another idea was to use 2 of those adapters for extra strength. But then Id need 4 of them total as Id like to be able to put the vise on either side of the bench. I could also bolt it to the top, but then of course that would take up space and be in the way, even if I removed the vise when not in use.

Then I had an idea I could use soemthing along these lines perhaps somehow


or

Then theres this idea, if I trimmed the vise mount i think it may work the best as I wouldnt have to cut holes in the bench. BUT IDK if putting my faith in 4 bolts in 2 2x4's is a good idea


Thoughts?
 
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CJM8515

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I just bolted my vise to a scrap of 2x8. I clamp it to the workbench surface when needed. When not needed it goes on the shelf.
That would work for light duty applications, perhaps with say a scrap of 2x10 or something, but really banging away might be an issue

edit: had a thought.

What If I used the scrap 2x10, and bolted it to the bench? yea there would be bolts, but then I could swap out the vises when I wanted. That might be the simplest and cheapest solution overall.
 
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FloydShine

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“I would rather not drill holes in it to fit a vise” - but let me show you my amazon shopping list. Sounds like you are seeking validation to spend money on plates that are bolted to the bench. Personally, I have utilized the scrap board or scrap plate with HD C clamps. Never had a issue, we utilize anvil stumps, with vises lag bolted for heavy banging.
 
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CJM8515

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^ Well the thing is the bolts would be hidden between the 2 layers of plywood. IDK I just hate unsightly holes in a bench AND if I was to have several different mount holes if one set of holes was exposed small parts could make their way bye bye.

I think Im over thinking it really. Ill probably just go with the scrap 2x10 piece and bolt it to the bench itself.
 

Shootinok

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Sounds like you built a formidable bench top and frankly if your pounding on a vise with enough force to worry about two 3/4” top layers, then you are severely abusing your vise. The proposed options will give you flexibility, but seem expensive. The first one still requires you to drill holes in the top, if I’m understanding it, but if you recessed the top plate into your top it would be ridiculously strong.
 
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Solarphil

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Forget about pounding, all of those receiver-based options would add a huge amount of slop and wiggle to your vise. It would drive me to distraction not being able to (as example) file a clean, straight edge to a piece of metal clamped in the jaws, when the overall stack is flopping back and forth with every stroke.

You‘re right, you’re overthinking it. Get a handful of scraps of 2x or ply. Drill identical holes for the bench mount, so you can swap vises out on a whim (everyone needs more vices) using the same hardware. Mount each vise to their individual board. Go wild. Treat your friends and your vices to the money you didn’t spend at Amazon.
 
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CJM8515

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Forget about pounding, all of those receiver-based options would add a huge amount of slop and wiggle to your vise. It would drive me to distraction not being able to (as example) file a clean, straight edge to a piece of metal clamped in the jaws, when the overall stack is flopping back and forth with every stroke.

You‘re right, you’re overthinking it. Get a handful of scraps of 2x or ply. Drill identical holes for the bench mount, so you can swap vises out on a whim (everyone needs more vices) using the same hardware. Mount each vise to their individual board. Go wild. Treat your friends and your vices to the money you didn’t spend at Amazon.
Thats what Ive concluded as the best option besides steel plate. I dont have a welder so wood will work well I think.
(2) 1/2 or 5/8" carriage bolts should be plenty heavy duty enough to mount the wood to the top. yea ***** there will be holes, but this is the best method I come up with.
 

mikedodge

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I don't see how any of the Amazon options would be better then clamping it down like the first reply. Giving in and bolting it down is the best. If you put any strength into clamping something into the vice anything but bolting it down could be dangerous.
 

tarmy

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Here is an idea OP…do this to the bench and mount all the vices different hitch plates to switch out.315635CC-3DA4-405A-BDD8-914E7738D67C.jpeg
 
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