Metalworking, 2x72 Belt Grinder, Build, plans, Tools, tool restoration, tool design, building, motorcycles, fishing, workshops, hoarding tools and much more.
OK, enough now. At 1:07:35 for the third time you say "45 degrees off the table" which it's NOT. It's 90 degrees. You made an edit for the first time, then there's a second time, this is the third time. Everything else you've done is so precise, and orderly, don't spoil it, fix it!
How does your epoxy floor hold up to the welding slag? I have epoxy floors and am starting to weld and I paid a lot for the epoxy floors and am worried what the slag will do to the floor.
@@tonyg4622 putting four screws in something is hardly making it. but taking the iron out of sand and putting the carbon in it through charcoal and a furnace and then making the steal yourself and then forging that steal into a pan that would be making it. and making things is not therapeutic it's a labor of love
I’m gonna order one, trying to figure out how to make the other half think i only spent $500 on it :-) It’s worth every penny but they just don’t get it sometimes. might have mail a bank check
Which castable refractory are you using? In the past I've heard some bad things about them, but they can't all suck if you've been having success with whatever you're using. I've been using a hybrid approach of fire brick and straight sand as a back filler + sand/water glass where applicable...
The reason why you want to keep heat as low as feasible is not just the obvious of preventing an overheat, it’s because the higher you make the “ambient” temperature that the VFD will inhabit the faster the electrolyte in those LARGE ELECTROLYTIC CAPACITORS will evaporate shortening their lifespan. This is especially true for lower temp 85°C capacitors. As a super overly generalized rule you should expect that for every +10°C increase a component operates at, its lifespan is halved. Quality caps rated for 105°C should have about 4x the life expectancy (at the very least 2x). So encapsulating the VFD won’t immediately kill it or even cause it to go into overheat protection in most normal use cases. I have no way of knowing what temp the VFD or its individual components may reach. However I would almost certainly bet it will operate at 10-15°C hotter than open vented (based on what i’ve seen from electric motors in TEFC vs Open Vented temperature differences. What it ultimately boils down to: Is the protection gain from being in a dust free sealed environment worth the lifespan reduction from increased temperature while operating in said sealed environment? While the general rule would suggest 50-67.5% reduction, [speculating based on my own personal experience] I would expect a 20-25% reduction, no more than 1/3. But these numbers aren’t super helpful w/o the knowledge of the average lifetime of the units under controlled condition… even so it will probably fit a classic bell curve with extremes of 24months. So if you happened to have had a unit that would have lasted 12months longer than the average, the impact of reduced operation from the heat might simply drop its lifespan to within a negligible time of an average unit leading someone to think the increased heat from being sealed had no impact. I think the best thing to do would be to compromise and find a way so that the aluminum heat sink could be placed so as to create a seal around the fins leaving them outside the container. Judging from the shape and design, this should be 100% feasible w/o getting overly intricate. My 2 cents for what it’s worth to anyone willing to read this far
This VFD is still in good service today. Still works great. I have 5 other ones with daily use, setup just like this without any issues. So we are good to go. 👍🏻
@@HouseMadeUSGreat to hear, If you have a temp probe that you could place inside the container to monitor what temp it gets to I would love to know as would the general community. Along with that I would even more like to hear back (even years later) when they finally give up the ghost. If it makes it 5-7+ years then that will speak volumes for going that sealed route: simply the protection gained far exceeds the risk of premature failure from shorted electronics due to metal/dust.
