Final video of our over tightening vices video series! This time we will modify the vice in the way that the frame becomes the weakest link. How much force it takes to crack the frame?
I know this is old as hell, but that's a brake caliper pin. the calipers actually slide freely side to side on it so that it can always center itself on the rotor. they are hard hard hard hard hard hard hard
I broke the vice by elongating the screw. Threads didn't detach from the screw. Weak point was somewhere in the middle between the nut and the end of the screw which was surprising for me.
I was about shitting myself with you guys standing right next to a little cast iron bomb. So glad you got the safety plywood out! Also, what an interesting failure mode. I thought for sure the threads would strip out first.
Really intresting! Pretty impressive that bolt held up so well also - it didn't even bend (the way you had it with the "cheat pipe" only covering half the bolt, also makes the bending force on it quite extreme)
Those 12.9 bolts are used to tighten the heads onto race cars, also most normal cars as well. Super strong heated/quenched bolt against cast iron? Cast steel? No chance.
Anni is so supportive ''go lauri'' ''go lauri'' as lauri swings hard on a six foot scaffolding bar trying hard to snap a vise in half.... true love .... Anni come on I found another vise get the camera and the safety plywood.........lol love you guys keep up the good work
The locomotive on the train passing by your filming workshop had the letters VR on it. If you got your own train, you would not even need to re-brand! Vuohensilta Rail is already on display! And imagine the things you could crush with your own train! How much can it take until we derail!
i broke a 6" vice once. i was using a big cheater pipe on it. when it broke, it sent the back half of the vice shooting into the wall. it didnt do a slow soft break like your guys' vice did... this one was quick and violent haha!
Very good vice, well made, handle sacrificed way before the main casting which was seriously past any possible abuse, record vice I have if similar size is rated for one ton and tested to 1.5 ton
We had a college project to study how C clamps were breaking. Cheap Chinesium from a local store, you could break them using the handle. So, in addition to profile studies, grain studies, composition studies, we wanted to measure the actual relation between torque and load. So we had a load cell and a instrumented torque wrench, so we had to put a nut on the screw to use the torque wrench. So I had the job of holding the wrench and looking away while my buddy Thomas welded the nut to the screw. A bit of weld spatter leaped over and burned the web of my thumb. After several expletives, we had what we needed. So we mounted the clamp with the load cell, and had the guy who had made the torque wrench. So I was holding the clamp in the bracket, and the wrench was being operated by the third guy, and he commented "smells like someone had fried chicken." I replied "that's probably me" and Thomas broke down laughing. The smell was recently fried flesh.
I'd love to see the thread. Pretty amazing it held and was in good enough shape you could spin it by hand afterwards. I thought it would be chewed up beyond any use.
That would have been so much easier if you had mounted the vice vertically so you could have just walked around it pushing the cheater bar. Than would have been less fun to watch though.
I would be interested to see what force you could get it up to if the vice was welded with some nickel rod and repaired. Could a good quality welding repair achieve the same force, or would it break at a lower force? Hmmm...
Cool. Now we all know what a vice can do/handle. Actually a bit less than I expected. I sort of thought one that size could do about double of what it did.
10:20 This snow dump site must contain a lot of platinum from catalytic converters, because apart from snow it also contains a lot of road dust. It is probably also slightly radioactive from all pollutants from fossil fuels, asphalt, etc. Cody from Cody's Lab would be honored to be able to carry out several experiments on this snow pile :P
@@domwasha100 Casting is metal too, but there is a difference also between the forces in this experiment. The automotive screw did not had to withstand the same force as between the jaws, even with the pipe, because the screw inside the vise acting as a lever. Apart from that, I bet that 12.9 screw alone wouldn't break at 4.6 tons pulling force... The vise bottom part is not pulled straight away. The point where the crack started probably had to whitstand several times the force between the jaws due to the geometry. If you have pulled the bottom U part straight it's longitudional axis, it would probably take way more than 4.6 tons.
@@gabiold yes, but casted metal in this usage isn't a pure piece of metal. Look at casted anvils, versus pure metal anvil. Same thing. Thanks for insulting my intelligence or lack of insight. I don't comment often, because I usually get corrected by keyboard warriors who've never done or seen this first hand. Once again thanks
It's probably a grade 6 or grade 8 bolt which is high carbon steel. The handle on the vice was probably just mild steel, more like a common nail. ( how it didn't strip the threads, or break the main bolt puzzles me)
Weld it back together and try it again. I'd be interested to see if it would fail at the repair or if the weld would redirect the force to a different part of the vise.
You should test the screw in the vice how much force it can handle before you get a steel rod from it when you press it with hydralic press agains the nut in the vice
You know the vice is being annoying when Lauri sounds like Jeremy Clarkson. "Come ooonnn!!!" lol! Great video! Wonder if it will explode if you weld a nut on the end of where the handle goes and use an air powered Impact wrench on it?
I could've told the probable outcome. My dad was really pissed when I broke his 5" vise many years ago LOL. He called me a bonehead but I got him a new bigger 6" vise. God I wish he was still with us
You should build your own platform and station. Maybe even your own siding so you can send your scrap metal for recycling by rail. before your workshop was built, was this railway land. What is the history of the site.
I had like two crappy vices fail like this, one at some really lame low force, it has simply cracked and fell apart, the other, similar to this one failed at some high forces applied on the edge of the jaw.
You need to do this with some high speed rotating tool like a realy strong drill, attached to the Vice. Possibly with gears if it is to weak, but that will tighten it really fast so it goes Boom when it snaps.
Surprised the threads on the screw didn't give way before the vise itself. And you should put some railcar wheels on that Subaru with the saw blade tires and drive yourself to the workshop on the railroad tracks!
I actually have broken a similar sized vice by hand. I didn't have a cheat pipe and the handle didn't bend. It did see rough use though. Like bending metal by putting it in the vice and hammering. And crushing things in the vice.
Fun video I really enjoyed it! It's always interesting to see the breaking point of things! Have a good one guys see ya next time and have a great day:D
Harbor Freight's standard mechanic's vises (the style of vise featured in this video) break quite easily. I hear their giant rotating vise is a lot better, but I'll stick with a better quality one for my shop. I broke the 5" Harbor Freight one with only about a 1-foot extension bar on the handle. Hopefully, as they add more good quality tools to their mix, they'll bring out some better vises. I don't expect them to compete with Wilton's high end lineup, but make something as good as, say, Irwin, for a lower price, or as good as the cheapest Wilton stuff for the price of an Irwin,and they will be doing well. On the other hand, as much as we use them as such, a vise is for clamping. It's not a press, and it's not meant to be. One of the best things I did in my shop was go and buy the 12-ton manual hydraulic press from Harbor Freight. I use the shit out of it, it's much more precise, better on whatever I'm pressing, and I don't break vises anymore. My only regret was not buying the 20-ton one.
Build a rail go kart or bike with sidecar with track wheels. People in the USA explore abandoned tracks with them. Better make sure you know the train schedule!! 😃
Actually, here in Finland we used to compete with rail-go-karts. in 80's and in 90's it was televised nation wide and was popular entertaintment. Here's a link but there's no english subtitles. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-8lKRc1eInrk.html
one of my customers broken his harbor freight vice trying to remove a rused nut that was around a rod with a millwakee 1/2 impact. Vice broke and the rod and nut stayed the same. I took it on to my tool truck where ive got my wilton vice set up. Pulled it out in 5 sec's with the same milwakee impact. A price to pay for quality. $50 vice vs $350 vice