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Joined 1 year ago
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Cake day: October 10th, 2023

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  • First tip: we call them “hoods”. As in “drop the hood and get to welding”

    A welding mask to me is one of those handheld jobbies my instructor used to use back in welding school. Think clipboard on a stick with a very dark piece of glass over a cutout in the middle.

    Old “welding hoods” are literally that. A big leather hood that goes over your whole head with a little fixture to hold the welding lens over your face like snow goggles. They still make this style today for real heavy welding applications


  • I know you said you’re just a hobbyist, but a positive air pressure respirator is just the way to go when you’re a welder. It’s basically an over the head setup that works like those old hazmat suits you’d see in movies. It’s got a fan or something blowing in slightly higher pressure air, so none of the air outside can get in as the air is always moving out due to the difference in pressure. What it means is that ALL particulates, gasses, and whatever else you don’t want to breathe have no way to get to you unless it somehow gets into whatever is supplying your air.

    They make fanny pack sized units with batteries that are mobile, which works for me as I’ve had to go down in ships and up on scissor lifts to do welding before. I believe they also make slightly bulkier stationary setups that are significantly cheaper but often require other equipment (eg. Specialized compressor) to function. The all in one setup i got is quite expensive (about $2k new) but I managed to find it for quite a bit cheaper used on ebay. I’m comfortable doing this as I’ve been a welder for 15 years and have experience with quite a few different PAPR systems and am confident in my ability to troubleshoot any problems. If you’re completely relying on something like this for safety without really knowing how it works, I’d recommend definitely getting something that comes with a warranty. The parts can be finicky, delicate, and expensive.





  • It’s not rare but it’s a pain in the ass to purify and transport. Semiconductor place I used to work had a gigantic 1000 gallon tank of the stuff they had to get refilled every month. Had to have some specialty chemical tanker truck it out. Then there’s problems with icing your whole setup once you actually have the stuff and try to use it. It’s less of an immediate fiscal strain and more of an expensive infrastructure problem.



  • Welder here. Aluminum oxide inhalation is correlated with an increased risk for alzheimers, not cancer. Hexavalent chromium is a carcinogen, and that comes from heating up stainless steels. So you are actively replacing a relatively non toxic oxide with the potential for an actually toxic carcinogenic gaseous metal, assuming your pocket knife is some sort of stainless steel (statistically very likely).


  • LordGimp@lemm.eetoMemes@lemmy.mlDMCAtendo
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    2 months ago

    This has always struck me as a dumb argument. Before “intellectual property” innovation was just technological advancement. Patenting is just enabling punishment against actual innovators. I am a welder. I make things. If I set out to make a stove, I don’t give a shit who patented what fuel distribution system or air intake methodology, I’m gonna make a damn stove. The entire concept of being able to exclusively “own” a design or concept is reductive to human learning as a whole.







  • It depends on what you’re doing. Metabo makes the best angle grinders. DeWalt makes the most reliable hand drills. Milwaukee is affordable. Imo best bang for your buck is good used tools. S&K made the best rachet set in the world for a time. Starrett and Mitutoyo stuff used to be practically bulletproof. Most modern brands don’t hold a candle to the quality of tools made 40-50 years ago