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Bertha the Toaster posted:Look at the words on the case at the end, you can't make out what it says but you can tell the capital letter is on the right, meaning the text can be read right to left. So these must be Arabic threads. 
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Jun 19, 2022 03:27
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Silly question ahead. That tool is called an impact wrench, right? When they start trying to extract the bolt you hear a lot of clicking / ratcheting sounds but nothing is moving. Then a moment later the bolt moves and the tool is working as intended. So does that tool have some sort of mechanism where it slips safely once it exceeds a certain level of torque but still does some level of work somehow? Because for a moment there it seemed like something inside the tool had stripped and was just spinning freely to no effect. But after another moment the bolt had been worked loose and the tool seemed fine.
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Jun 19, 2022 03:55
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McCracAttack posted:Silly question ahead. An internal hammer is hitting the "anvil", this is the impact in impact wrench. It's like welding a bar to it and banging on it, the impacts cause a very high instantaneous torque, which helps break loose things like rusty bolts. The hammers run on a sort of clutch mechanism so they continually spin, gain energy, and impact the anvil, even if the output shaft is not moving.
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Jun 19, 2022 03:56
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McCracAttack posted:Silly question ahead. I didn't learn how an impact driver mechanically differs from a power drill until like a month ago and I'm in my late 30s. Instead of a motor that delivers constant amounts of torque, an impact driver or impact wrench has is a spring and anvil/hammer inside the assembly that delivers a lot of force in a single instant and repeats that rapidly. It gives a lot more torque and can tighten and loosen fasteners that would really fight you with a comparable non-impact tool.
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Jun 19, 2022 04:03
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solarNativity posted:An internal hammer is hitting the "anvil", this is the impact in impact wrench. It's like welding a bar to it and banging on it, the impacts cause a very high instantaneous torque, which helps break loose things like rusty bolts. The hammers run on a sort of clutch mechanism so they continually spin, gain energy, and impact the anvil, even if the output shaft is not moving. waffle iron posted:I didn't learn how an impact driver mechanically differs from a power drill until like a month ago and I'm in my late 30s. So it's literally a mechanical version of grandad tapping on a rusted garden spigot with a hammer?
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Jun 19, 2022 04:05
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Uthor posted:... I used to do this all the time until I found out it follows a hand rule. Do a thumbs-up. If you rotate the bolt in the direction your fingers are pointing, and the bolt moves in the direction your thumb is pointing, it's that handed thread. So for right handed threads you rotate the bolt to the left it moves up and away from the surface. Blew my mind that works for more than just magnetic field lines. solarNativity posted:An internal hammer is hitting the "anvil", this is the impact in impact wrench. It's like welding a bar to it and banging on it, the impacts cause a very high instantaneous torque, which helps break loose things like rusty bolts. The hammers run on a sort of clutch mechanism so they continually spin, gain energy, and impact the anvil, even if the output shaft is not moving. It also makes it possible to hold while it's exerting hundreds of ft lbs of torque. A regular drill will try to wrench itself out of your hands at a fraction of that.
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Jun 19, 2022 04:10
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https://youtu.be/f0gSJa3L_7c Skip to 2 minutes for a slow-mo cut-away. This one’s an attachment but the mechanism is the same as in a monolithic unit.
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Jun 19, 2022 04:13
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Bad Munki posted:https://youtu.be/f0gSJa3L_7c That's really cool. I knew the general idea of what they're doing, but no idea on the actual mechanics.
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Jun 19, 2022 04:17
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Bad Munki posted:https://youtu.be/f0gSJa3L_7c Okay so it whacks it and if there's no movement it overcomes that backing spring to slip up and come around for another whack. It's literally hammering away at it. I feel like I get it now. Though I'm surprised that doesn't wear out super fast.
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Jun 19, 2022 04:19
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McCracAttack posted:Though I'm surprised that doesn't wear out super fast. The materials get a lot of pep talks during manufacturing.
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Jun 19, 2022 04:23
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Bad Munki posted:The materials get a lot of pep talks during manufacturing. Good for them.
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Jun 19, 2022 04:25
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Unless it’s Harbor Freight. Those ones are lucky if they hear “good luck, rear end in a top hat” as they’re thrown out the factory door. For real though, you might be amazed at some of the modern materials available. I have no idea what the key parts are made of there but it’s probably something fairly cool, or at least cool enough to not be the part mostly likely to fail.
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Jun 19, 2022 04:28
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Last moment before gondola fell off high-rise in HK, killing 2 [NSFL] https://www.youtube.com/watch?v=xiOq4iVkYJQ [/NSFL]
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Jun 19, 2022 04:28
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McCracAttack posted:So it's literally a mechanical version of grandad tapping on a rusted garden spigot with a hammer? Percussive maintenance is a time-honored tradition.
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Jun 19, 2022 04:36
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Bad Munki posted:Unless it’s Harbor Freight. Those ones are lucky if they hear “good luck, rear end in a top hat” as they’re thrown out the factory door. I've been using both air and battery powered impact drivers from Harbor Freight regularly for about 12 years. They work great
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Jun 19, 2022 04:40
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McCracAttack posted:So it's literally a mechanical version of grandad tapping on a rusted garden spigot with a hammer? Grandpa is hammering at approximately 2500 strikes/minute
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Jun 19, 2022 04:50
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solarNativity posted:Grandpa is hammering at approximately 2500 strikes/minute That’s just the Parkinson’s
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Jun 19, 2022 04:55
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TotalLossBrain posted:I've been using both air and battery powered impact drivers from Harbor Freight regularly for about 12 years. They work great I love harbor freight. I always buy the first version of a tool there. If I use it enough to break it, I'll buy another or buy a good brand depending
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Jun 19, 2022 05:04
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I got my pacemaker there.
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Jun 19, 2022 05:05
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There’s gotta be a better way than this
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Jun 19, 2022 05:06
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RatHat posted:There’s gotta be a better way than this Better? Maybe. But cheaper?
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Jun 19, 2022 05:12
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LawfulWaffle posted:Percussive maintenance is a time-honored tradition. those extraction sockets are cool, they're super durable. its not stripping out the socket, it deforms the stuck metal until there's enough bite
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Jun 19, 2022 05:42
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tennis ball harvest is bountiful this year
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Jun 19, 2022 05:45
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RatHat posted:There’s gotta be a better way than this better, faster, cheaper pick 2 out of those 3.
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Jun 19, 2022 05:56
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Bad Munki posted:https://youtu.be/f0gSJa3L_7c This was really cool to learn, thanks for the link.
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Jun 19, 2022 06:04
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Fresh from the Newspaper Comic Strip thread, a lesson for us all: Monty 
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Jun 19, 2022 06:28
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Cat Hatter posted:I used to do this all the time until I found out it follows a hand rule. Do a thumbs-up. If you rotate the bolt in the direction your fingers are pointing, and the bolt moves in the direction your thumb is pointing, it's that handed thread. So for right handed threads you rotate the bolt to the left it moves up and away from the surface. Blew my mind that works for more than just magnetic field lines. Yeah, I did that and was like, "dumbass, this is a RH thread!".
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Jun 19, 2022 07:33
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Armacham posted:I love harbor freight. I always buy the first version of a tool there. If I use it enough to break it, I'll buy another or buy a good brand depending That's a really common saying. Adam Savage was recently saying "buy the harbor freight/craigslist/big box store version first and if you use it twice a year buy the best version." It's just a "saying" though, he certainly hasn't followed his own advice about buying the best. Unless you're literally making money off your tools, you don't need "the best." When your job requires a tool, quick replacement probably matters more than having "the best." That's something I learned from boat-guys: if the only good local shop sells Yamaha, you probably don't want a Mercury. Is the $30 tool available in 2 days from Amazon good enough or do you have to use the $80 version that ships from Japan? Mechanics can get tools from a tool truck that are branded versions of their tools available on the OEM market. You can Google tool truck replacements or tool truck equivalents to find sites and threads to learn who makes the tool truck tools. As a bicycle guy Park Tools hex wrenches (industry wide standard tools) are all made by Bondhus. Bondhus wrenches were already my fave hex wrenches prior to taking up cycling but the Bondhus version uses better steel with better tool geometry than the Park Tool version that basically every bike shop in the US uses (packaged combo toolset). The OEM tools are much cheaper, for home shops. A professional tool user can't afford the downtime to wait for shipping and will pay more for the same tool to show up faster, under warranty. I know a lot of people poo-poo Ryobi, but if you're going to invest in an ecosystem it's probably the best battery system for casuals, IMO. Most of us don't need Milwaukee but want something better than Home Depot's house brand battery system.
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Jun 19, 2022 07:34
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I bought all my power tools from AliExpress and so far had no issues. Work perfectly fine for home wrenching. Not as good as a real Makita of course but you can't complain about a $30 impact or $20 drill.Zakrello posted:better, faster, cheaper I'd bet a little conveyor thingie to bring the balls up would be all three if you account for the dude having to stand there and all the fuckups
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Jun 19, 2022 08:29
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Yeah, I own this set too. The only reason I ever would power try to it out would be if the threads were thoroughly soaked with a few hours of whatever panther piss I had hon hand. Person got lucky. Otherwise it’s a hand job, in all senses of those words.
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Jun 19, 2022 08:36
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MisterOblivious posted:
I agree with this. I have ryobi stuff for home improvement because I use that stuff a few times a year: I really only want the cheapest option that is still safe. My local harbour freight equivalent (ozito) is so cheap that it's no longer safe. There was an infamous drill press they sold that shifted the bit about 2mm if you bottomed it out.
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Jun 19, 2022 09:40
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Splode posted:I agree with this. I was a big Makita person but also buy cheap nasty stuff from Ali mainly for the Aliexpress thread here but also cos cheap and I don't care. I'd rate many of the knockoff brands before I suggest Ozito lol. But now I'm kinda in the Ryobi ecosystem thanks to CatIntercepter from the AI secret santa one year.
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Jun 19, 2022 10:41
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MisterOblivious posted:Pro tip from my dad: turn the bolt or screw the wrong direction until you feel the click. Your threads will now engage safely. I learned this as a kid, and I’m always surprised that not everybody does it this way.
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Jun 19, 2022 11:26
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Zopotantor posted:I learned this as a kid, and I’m always surprised that not everybody does it this way. ESPECIALLY when threading into plastics!
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Jun 19, 2022 13:23
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Zopotantor posted:I learned this as a kid, and I’m always surprised that not everybody does it this way. I learned this trick watching someone put a scuba regulator back together after a service/repair. Those have to deal with up to 3500psi if someone overfilled a tank, loving up those threads at all can have some serious consequences.
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Jun 19, 2022 13:34
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Icon Of Sin posted:I learned this trick watching someone put a scuba regulator back together after a service/repair. Those have to deal with up to 3500psi if someone overfilled a tank, loving up those threads at all can have some serious consequences. Someone else in the pool had a yoke fail when I was taking my open water training. It’s loud as hell.
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Jun 19, 2022 13:40
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MisterOblivious posted:I know a lot of people poo-poo Ryobi, but if you're going to invest in an ecosystem it's probably the best battery system for casuals, IMO. Most of us don't need Milwaukee but want something better than Home Depot's house brand battery system. Ryobi has really leaned into the casual home use space and they're by far the best cheap option out there. For some related OSHA content I watched a guy drop my dewalt impact driver two and a half stories onto cement because lanyards are apparently a difficult concept but the loving thing still works like it just came out of the box. Didn't even crack the battery.
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Jun 19, 2022 13:53
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Platystemon posted:Someone else in the pool had a yoke fail when I was taking my open water training. Free flowing regs were bad enough, but at least you can steal enough air to get back to the surface/your buddy (then back to the surface). It’s not like you can grab your buddy’s alternate air and have them put the reg back on your tank, water is utter poison to the inner workings of those (pool or saltwater even more so). Pressurizing that kind of setup underwater was a fear I never even knew I had I wrote this post  I saw someone who tried to do the math on how much potential energy a full scuba tank contained (Aluminum tank, 80 cubic feet, 3000psi) and it worked out to something like a couple of hand grenades of energy. And that’s before you even get into the idea of a gas that’s got a higher O2 percentage than atmospheric gas, that’s just the calculation of that mix gas under that pressure. …the shop owner where I worked would routinely drive around town with ~20 full tanks in the back of his suburban. If he’d gotten rear-ended, there probably wouldn’t be enough distinct bits of him left to ID. e: forkfuckler in action!  Idk if Instagram still wants you logged in to view posts, but here’s the original. Whole account is probably worth posting here. https://www.instagram.com/p/Ce4UNDIvNLd/?igshid=YmMyMTA2M2Y= Icon Of Sin fucked around with this message at 14:01 on Jun 19, 2022 |
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Jun 19, 2022 13:55
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Icon Of Sin posted:I learned this trick watching someone put a scuba regulator back together after a service/repair. Those have to deal with up to 3500psi if someone overfilled a tank, loving up those threads at all can have some serious consequences. It gets even more important if you're working with a Tri-mix or a closed or semi-closed system. leaks, explosive disassembly, AND potential contamination! Yay!
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Jun 19, 2022 14:15
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