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The Beauty of Pulse Arc Welding
- LorenDB 4y agoWhat an annoying website - when you right-click the page, it pops up a copyright notice dialog.
- mhb 4y agoIn Firefox, if you click a few times, it offers the option of suppressing that notice in the future.
- danhau 4y agoI think Shift+Rightclick should work too. At least it used to.
- haunter 4y agoDon't see this in Chrome + uBlock
- calvinmorrison 4y agoWhat a throw back you mean! Haven't seen one of those in years
- h4ch1 4y agohttps://0x0.st/HXU8.png https://0x0.st/HXU8.png anyone know what these POSTs to play.google.com/log are for
- smegsicle 4y agoexcellent use of a Free Scroll to Top Button from ScrollToTop.com however!
- eimrine 4y agoDeleting "DJD" from a knife is kind of adblock but for metal things, as far as I have understood.
- Tepix 4y agoNeat, i didn't know this was possible (removing engravings).
- convolvatron 4y agoI have done a little silver work with a tig, down around 15A. I really felt this was the bottom of the range and struggled to maintain a puddle. is there anything fundamentally different about this process?
- 1970-01-01 4y agoThis is pulsed MIG. Edit: It's TIG in the video. I assumed jewelry used MIG because that's normally how thin copper is welded: https://www.youtube.com/watch?v=IyAaX0RZMVc&t=70s https://www.youtube.com/watch?v=IyAaX0RZMVc&t=70s
- tylerag 4y agoAnd therefor you don't need to maintain a puddle in the workpiece. I'm assuming silver tig welds like copper, the heat flows away from the puddle so fast that the entire thing turns into a blob.
- 1970-01-01 4y agoYes, silver has the fastest heat conduction of any metal. It's faster than copper.
- convolvatron 4y agothanks, that's pretty key. I've done plenty of copper, but for some reason (maybe just the cost), I didn't think of it like Al or Cu where you really need to take into account thermal mass and preheat. I suspect that's where the pulse settings really shine - getting really local hot spots in a very short period of time. if silver starts becoming more decorative and less of a specie I'll probably try in earnest
- shirleyquirk 4y agoNo it's not, there's no spool. It's tungsten electrode, inert gas. Feed wire and electrode diameters are, like, 0.3mm
- 1970-01-01 4y agoChatGPT isn't going to destroy Jeff's job.
- CoastalCoder 4y agoHow about ChatGPT producing a suitable CNC program? (I have no idea how feasible that is, I'm just curious.)
- Blackthorn 4y agoAnd you thought chatgpt was bad with subtle bugs in generated Python code. Now just imagine it scrapping a thirteen hour part or crashing a $300,000 machine.
- CoastalCoder 4y agoI've never worked with a CNC. Wouldn't they typically have safeguards against machine-damaging instructions?
- deleted 4y ago[deleted]
- jaipilot747 4y agoUsually not. Especially not in machines where you manually set the bits and the machine has no idea of the bit and it's properties, nor of the piece you are machining.
- Blackthorn 4y agoWhat the machine knows: (1) Where the head is. (2) If you program it right, where the end of the tool is. (3) If you program it right, what the width of the cutting edge of the tool is. That's it. You could maybe prevent it from diving the tool into the table. But you won't prevent it from trying to take a 2" cut into D2 steel. Or going down into a pocket and crashing the tool holder into a section of the workpiece. Or going down into a pocket and rapid moving left, slamming the tool into the workpiece (which if you're lucky will just break the tool).
- anfractuosity 4y agoIntriguing, I wonder how this compares to laser welding for jewellery etc. Edit: Just noticed he mentions in the video laser welding is more suited to smaller items
- MisterTea 4y agoThat custom micro TIG setup is really nice. That articulated arm is really neat, but that scope head must be very light. I'd like to know the brand as it looks plenty solid. Pulsed welding is super useful for filling and repair operations on thin sheet where you can "shoot" a tiny blob of filler wire into the joint/hole/gap and fill it in. Or perform small butt-seam welds without filler. I've worked with fiber and yag lasers and the welds are really clean and solid. You can even weld larger parts together with decent strength or tack fo larger welding operations. Even some of the electron beam welders there had a pulse welding mode. "Won't fit in a laser cabinet" - You just need a better laser setup instead of a fixed optics machine. Buy a fiber laser, like an IPG QCW 450/4500 get a small D30 head, 125mm lens, coax nozzle with a camera tube (don't buy the camera from them as they just resell a Sentech for double the $) and build another station like your TIG setup but mount the laser head instead. You'll have one hell of a fiber welder. You might even be able to move work over from your TIG setup. They might offer a binocular setup for the head or have one fabricated if you don't want the camera/monitor setup.
- gertrunde 4y agoThe article refers to it as a "Lampert PUK04" - a search turned up this link: https://www.lampertusa.com/products/puk04-with-microscope-sm04-and-argon-gas-regulator https://www.lampertusa.com/products/puk04-with-microscope-sm... I suspect that it has since been superseded by the current PUK6 model (and previously the PUK 5, judging by search results)
- MisterTea 4y agoYeah the Tig will certainly be less costly vs the laser setup which will run about 20-30K.
- analog31 4y agoThe first thing I saw was no protective gear. Does this process really produce no UV?
- Gh0stRAT 4y ago>Does this process really produce no UV? I have no idea, but the microscope he's looking through could certainly have UV protection built-in. Or perhaps the pulses are so short and small that the cumulative risk is negligible? Either way, it seems to me like there could be ways for it to be safe enough to require minimal PPE while still producing some non-zero amount of UV.
- analog31 4y agoI'm also thinking about skin exposure. Fortunately glass optics are at least opaque to the most dangerous bands of UV, but not to retinal blue, which has its own special place in the regulations.
- gaze 4y agothe microscope blanks when the arc is fired
- MaxikCZ 4y agoWhat happens if one time it fails? Does it instant blind?
- monknomo 4y agoLooking straight into a welding arc doesn't blind you instantly. Eventually, sure. More rapidly it gives you a lingering after image and feeling like your eyeball is full of sand
- convolvatron 4y agothe 'eyeball full of sand' can last for several days, and really interfere with your normal functioning. that and the greatly increased acceleration of cataract development means really dont look at the blue light.
- Blackthorn 4y agoOnly somewhat related: has anyone tried pulse stick? I don't have a machine capable of it, but it seems like it would allow some pretty easy stick welds. Especially on thinner pieces.
- dsfyu404ed 4y agoThe venn diagram of people who get really exited over pulse welding and people who spend enough time using a stick welder to notice yet alone realize any benefit from those settings" is just two circles. I can see the theoretical benefit in how quickly you can put down material but all of the people who actually need that in practice are probably already using something that feeds off a spool.
- shirleyquirk 4y agoCorrect. In a stick welder I care about: working all day, in the rain, up a ladder, at 130A. For ease/quality of the weld, I pay for quality welding rods, not more settings.
- binarymax 4y agoReally beautiful work. Though not as detailed, This Old Tony has an amazing pulse TIG welding video, for those who want to see it in action https://youtu.be/a6fUCApr03g https://youtu.be/a6fUCApr03g
- causi 4y agoSometimes the joined area is not visibly accessible, and I don't know if lead has been used. You could use a lead test swab. They come as small as precision q-tips.
- CamperBob2 4y agoPerfect excuse to get that XRF gun you've always wanted but couldn't quite justify to your spouse!
- farkanoid 4y agoI'm so infatuated with these machines that I've been working on designing my own version (using parts available at Mouser/Digikey) for close to a decade. Unfortunately I've been unable to maintain a decent work/life balance due to the high cost of living. As a result, I honestly die a little inside each time I see an article posted about them. The last update was in 2013, where I completed the EHT "popstart" circuit (to replace the expensive retractable electrode, and allow the use of a standard TIG head): https://www.youtube.com/watch?v=Y4c5Le2kT6w https://www.youtube.com/watch?v=Y4c5Le2kT6w Some day I'll complete it!
- geocrasher 4y agoThis reminds me of TIG welding, but on an even more refined level. What an art!