Hi, I'm Adam! I'm an instructor in the machine technology department at Laney College in Oakland, CA. This is where I post about interesting topics and fun projects related to machining, metrology and mechanics. Some of the videos are for classes I teach and some are just for the heck of it. I think you will enjoy watching them. And I always hope you learn something!
I'm very active on Instagram, so that's a good place to catch some interesting posts about machining and life as a shop teacher :)
A machinist is someone who gets paid to make cool stuff with power tools! Learn how to become one at Laney College!
4:33 that a partial differential equation, linearity is not an issue since you are trying to solve for a specific use case (I.E. given sizes and weights, how high will it float with a given air pressure). With a bit of work, anyone with some PDE and R programming should be able to find an approximate solution. Anyway, I am pretty sure Gelbert just drilled holes in his granite and turned up the pressure until it worked - he is far to practical a person to spend time making plans when he will still have to spend hours tweaking.
Saw the hat; we used to do that at my previous job for holes in flat surfaces at 45 degrees. Drill bits would skate off but mill bits worked. Pretty expensive way to make holes in general though, since the materials, espeicially the zinc and copper, rapidly dulled the bit.
1) Adding an acid to a water you're not avoiding the exothermic reaction itself. You're avoiding formation of shallow layer of water on top of the acid. Such a disposition concentrates all the heat excretion near the surface and it will cause boiling of water layer and sputtering highly acidic solution all around. It is actually not enough to just pour an acid into a water -- you also need an active mixing of the liquids to spread the heat evenly. And even then you need to carefully control whether it about to boil. 2) No way you can get any violent reaction, any significant heat from the 30% sulfuric acid with water. It's too diluted. So you better won't be fooled by the calmnes of that mixture when you'll be dealing with some really highly concentrated acids (50 and more % for sulfuric acid) and especially oleum wich is pure evil. ____________________ It's better to have 2 or 4 smaller cathodes spreaded evenly around the edge of the vessel than one at one side. As far as the largest current goes through the least resistance, the surface of the part will be processed unevenly having just one cathode without rotating over time. Especially if it has any complex form.
Is there a difference between using raw chunk charcoal vs briquettes that have fillers and lighter fluid mixed in? Or are those also technically (hydro)carbon sources and work the same?
As you can see from my profile picture I managed to buy a Hilger & watts TA1-5 DIV 0.2 arcseconds here in the UK but finding the precision mirrors is very difficult so making one is the only option but when mounting the first surface mirror to the carriage with adjustable nylon screws is it necessary to align the mirror perpendicularly to it’s base? if so how can you do that with the highest precision? I’m using it to check the flatness of surface plates and machinery dovetail ways. Any help would be greatly appreciated 😁
Been a plumber for a few years and never really got into the specifications of pumps . Just installed them on jobs which the pump would have been supplied by our engineer and didn't put much thought into them. Swapping to go work for a pump company next week so getting to know pumps and the internals will be a benefit to me now . Thanks for the video
Okay, you do know that the charcoal dust you brushed away is hazardous, right? Not just because it can be explosive if it ignites (yeah, limited quantities) but also if inhaled. Our lungs don't process that well. Setting that stuff up is not an indoor project.
