Big vise build
- Thread starter royce
- Start date
95riosnake
Well-known member
I'm utterly floored at the level of quality and skill on show in this project. That name plate really is the cherry on top. This definitely reminds me of the old photos I've seen of the enormous vises in railway maintenance shops, but a much more refined and beautiful design.
Duker
Well-known member
^^^ A giant second on all of that.....!
This was a fun journey to read and follow along with.... great collaboration by you guys.
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chrisnazzy
Well-known member
Keep in mind those railroad vises were 8" to 9" vises. This monster that Royce has created with the help of KMScott has 13" jaws, integrated stand and could outweigh a railroad vise by 1000 lbs. A Prentiss, Hollands or Reed monster vise would like a homeowner's grade house sitting on the tail of this big boy.
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trijeff
Well-known member
yes, but with one of the purposely built RR vise stands the weights are really similar
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BMR24
Well-known member
You made it on the front page!
95riosnake
Well-known member
Oh I know, that's what is so incredible about this project. An 8" vise is considered huge in most settings, and this one definitely dwarfs one. I remember seeing a vise with 10" jaws in person and thought it was pretty crazy, I could only imagine what this one looks like in the flesh. I'm sure even the photos with scale references still don't do it justice!
cockford ollie
Member
- Joined
- Apr 25, 2018
- Messages
- 9
how are you going to ship it on ebay? USPS max weight is 70 lb
isb cornbinder
Well-known member
Remember the Trojan Horse? Maybe this is a Trojan Vice.
General Geoff
Well-known member
That thing is gorgeous, congrats on completing the project. If you do decide to auction it off, I bet it fetches five figures.
Curious, what kind of clamping force does that thing generate with a 200lb gorilla hanging off the end of the handle?
Curious, what kind of clamping force does that thing generate with a 200lb gorilla hanging off the end of the handle?
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Perrorojo
Well-known member
Well, now you're just being ridiculous.
NASTYZEN
Well-known member
You should have a plaque with your name on it, cause you know it will wind up in a museum some day.
Quite the masterpiece indeed . You outdid yourself this time Royce, Just beautiful.
Quite the masterpiece indeed . You outdid yourself this time Royce, Just beautiful.
trijeff
Well-known member
Nasty, the existing nameplate is a combo of Royce's and Kevin's last names
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Outlawmws
Well-known member
You should have a plaque with your name on it, cause you know it will wind up in a museum some day.
Quite the masterpiece indeed . You outdid yourself this time Royce, Just beautiful.
you mean like this?
View media item 84571
General Geoff
Well-known member
Using this calculator, a rough estimate using 1.75" bolt diameter for the main screw and 200 lbs of gorilla hanging off 24" of handle (knocking 2" off for the spindle) which equals 4800 in-lbs torque, and .16 for lubricated screw coefficient of friction, we get ~17,142 lbs of clamping force, or about 8.5 tons.
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Outlawmws
Well-known member
Is that PSI? if so its distributed over the jaw surface. (unless you get a 1X1" jaw extender)
It's still a LOT of pressure!
It's still a LOT of pressure!
General Geoff
Well-known member
Nah, that's total pounds regardless of surface area. 13x2" jaws would mean 26 square inches of available surface area, so if you're squeezing something that's flat, square and takes up the entire jaw surface on both sides, that would be ~654 psi.
Conversely, if you squeeze a penny, you get roughly 39,000 psi on the penny.
Conversely, if you squeeze a penny, you get roughly 39,000 psi on the penny.
Outlawmws
Well-known member
Your first statement is contrary to your second, which agrees with my comments.
You can't have it both ways, and the first statement is not correct.
I am curious hot the linked page interprets the "clamping force" adn again on what area? The contact area of the bolt head, or the undefined area being clamped? Its not stated.
General Geoff
Well-known member
Nothing contrary in my statements. PSI can vary wildly with the same exact force being applied to different surface areas. Pressure and force are two distinct measurements, with pressure being the ratio of force to area over which it is applied.
A 4,000lb car pushes against the earth with 4,000 pounds of force no matter how much air pressure you have in your tires. You can pump them up to 60psi or let them down to 10psi, but the total force is the same, you're just spreading out the force to a larger surface area.
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What an awesome project!! This thread was a blast to read.
Some time back I made a force gauge like this guy: https://www.skylighter.com/blogs/how-to-make-fireworks/arbor-press-force-gauge
It's been fun to put it in various vises, arbor presses, etc. I even fitted a lower psi gauge on it to measure load-displacement curves on bumpstops for 4x4 trucks. I seem to recall that my 6" vises will generate >8000 lbf clamp load. Vises with taller jaws yield a lower clamp load -- the torque has to balance between the top of the slide and the jaws.
To the OP, I'll mail you my gauge if you'll take a measurement for us!!
Some time back I made a force gauge like this guy: https://www.skylighter.com/blogs/how-to-make-fireworks/arbor-press-force-gauge
It's been fun to put it in various vises, arbor presses, etc. I even fitted a lower psi gauge on it to measure load-displacement curves on bumpstops for 4x4 trucks. I seem to recall that my 6" vises will generate >8000 lbf clamp load. Vises with taller jaws yield a lower clamp load -- the torque has to balance between the top of the slide and the jaws.
To the OP, I'll mail you my gauge if you'll take a measurement for us!!
JZiggy,
I would be glad to measure it.
When I calculated it, I came up with a number close to what General Geoff got, but that does not factor the friction losses of the slide and the meatball.
It will be interesting to see how much energy is lost to friction.
Any bets?
Thanks to all for the great input
Royce
I would be glad to measure it.
When I calculated it, I came up with a number close to what General Geoff got, but that does not factor the friction losses of the slide and the meatball.
It will be interesting to see how much energy is lost to friction.
Any bets?
Thanks to all for the great input
Royce
That's exactly why I put needle rollers bearings under the base of the lead screw where it bears against the slide.
I'll PM ya
It's just a bunch of Harbor Freight **** anyway so it's OK if he breaks it!
The ram has a 1.690" diameter piston, so the area is 2.243 in^2. Measure the psi clamped, multiply by 2.243 and you get the total force in pounds.
Here it is in the 4.5" Record --> 4260 lb
And the Reed 4C --> 6500 lb
I guess since the gauge only goes to 6000 psi our max load is 13,500 lb. I hope you exceed it!!
The ram has a 1.690" diameter piston, so the area is 2.243 in^2. Measure the psi clamped, multiply by 2.243 and you get the total force in pounds.
Here it is in the 4.5" Record --> 4260 lb
And the Reed 4C --> 6500 lb
I guess since the gauge only goes to 6000 psi our max load is 13,500 lb. I hope you exceed it!!
ClappedOutBport
Well-known member
- Joined
- Mar 30, 2016
- Messages
- 998
Our big Prentiss has I think only a 2 TPI screw on it. So you would need a cheater to really get the sort of pressure it is capable of. Then again, I'd rather not risk the nut.
I need to check this out on the home PC so I can see the pictures bigger.
Royce,
All of your projects have all been creative functioning works of art, even the "simple" stands. Cold weather is not to far out which means you'll want to spend more time in the shop. This Vise will be a hard act to follow and I'm not so sure you can turn back now. I'm really looking forward to whats next! Please do keep up the awesome work.
Thanks for raising the bar.
Wes
All of your projects have all been creative functioning works of art, even the "simple" stands. Cold weather is not to far out which means you'll want to spend more time in the shop. This Vise will be a hard act to follow and I'm not so sure you can turn back now. I'm really looking forward to whats next! Please do keep up the awesome work.
Thanks for raising the bar.
Wes
Just got done reading this thread on the PC where I can see the pictures better.
WOW. So full of unfreakingbelievable awesomeness.
WOW. So full of unfreakingbelievable awesomeness.
Thanks Wes,
Yes, we are seeing a few yellow leaves.
As far as projects go, I have a hundred I should do and a dozen I would like to do.
I will probably lean towards something I would like to do, rather than something I should do.
My discipline has really went in the ******* in the last couple years!!!
Royce
Yes, we are seeing a few yellow leaves.
As far as projects go, I have a hundred I should do and a dozen I would like to do.
I will probably lean towards something I would like to do, rather than something I should do.
My discipline has really went in the ******* in the last couple years!!!
Royce
Quoted for truth, treat yourself to the "like" column.
Allrighty then,
I received JZiggy's ram and gauge today and put the mash on it.
I ran the gauge up to just short of the peg at 5900#.
It was not all I could get, but was getting close.
6000#PSIG calcs to 13,458# total force
13,458# calcs to 414 PSI across the jaw surface.
My thanks to JZiggy for making this happen.
I checked some other vises and will post on the vise thread.
Royce
I received JZiggy's ram and gauge today and put the mash on it.
I ran the gauge up to just short of the peg at 5900#.
It was not all I could get, but was getting close.
6000#PSIG calcs to 13,458# total force
13,458# calcs to 414 PSI across the jaw surface.
My thanks to JZiggy for making this happen.
I checked some other vises and will post on the vise thread.
Royce
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Outlawmws
Well-known member
Needs a 10K gauge...
RivennHewn
Well-known member
Pick me up on the way, I'll split the gas with you.
Royce,
Anybody tell you lately that you ****?
KMScott
Well-known member
Wow, hope those jaws do not crack, I heard they come with a warranty. Works like it should Royce.
PugetDude
ALLIANCE MEMBER
Royce (and Kevin) Great job on the vise, and the collaboration.
Soooooo.... What's next?
PLEASE don't make us go back to the HF vs. SnapOn /Craftsman circling the drain threads...
Soooooo.... What's next?
PLEASE don't make us go back to the HF vs. SnapOn /Craftsman circling the drain threads...