Uhh on AvE he had absolutely no clue what he was doing. Using the video you are referring to as an example of why I don’t watch his videos. They are so bad that I’m not sure if he’s actually clueless or just purposely screwing things up. And if it’s purposeful, then he’s a liar and I can’t believe anything he’s saying. If it’s not purposeful then he’s so clueless that I can’t believe anything he’s saying either.
Let’s begin with his “analysis” of a plastic housing on a metal tool. What??? Did this guy just time travel from the 1800’s? We just got rid of our 1880 lathe in the shop last year. Now we have to throw all the others away! His arguments about heat are preposterous. So we’re going to abrasively grind a few mils of a tiny piece of steel maybe 3/4" in diameter at most. All the parts in contact with it (that conduct and radiate heat) are metal. Explain this melting thing to me? He didn’t try to grab the thing and “rack” it with his hands so obviously it’s pretty rigid. But I think I can see the problem now. So if I take a couple spare horse shoes and heat them up in my forge, nip off a couple pieces, shape them to make forged rivets, and then replace those cheap looking precision machine screws by pounding wrought iron rivets through the housing. So when the plastic breaks or lights on fire in the process…obviously a cheap inferior tool that simply won’t hold up to 1850’s building technology!
Alignment is KEY with ALL machining operations. You learn that on the first or second day either in a class or on the job. It’s one thing to take a piece of stock and make something out of it. That means you are doing the cutting and setting all the angles. A monkey can do that. Once you take it off the tool mount though and try to put it back on, that’s MUCH harder to do. Often times we have to just machine a new surface to true it up to the new mounting position. For high precision work (microns of accuracy), it’s impossible. On the DD it’s a three step process to set the angle on the diamond wheel (not everyone changes this very often), then set both the depth and get the alignment right in the bit holder. Then you MUST align the tool holder into the cup with the diamond. OK but that’s not what was done on AvE. First he stuck the bit in the holder. I can’t tell for sure how tight he got it but it is supposed to be snug but not loose for the next step. Then he stuck it sort of in the jig that is used to set the depth but didn’t tighten it there. In fact he kind of started sticking it in then jerked it right back out and somewhere along the way tightened it. Then he stuck the but into the grinding and started engaging the grinder even before the tool holder was even in the “socket”. So obviously the bit was sticking out way too far and he was more or less just making noise and grinding a surface somewhere on the bit not anywhere close to the current angle or position. I don’t see how this is a demonstration of anything except someone that won’t make it through the first week in the shop without getting fired.
He then demonstrated even more clearly that he doesn’t know what he’s doing. When motors do work the current they draw has a power factor of 1.0. But the motor must generate a magnetic field to do this. Since the field does no work, the current that it draws has a power factor of 0.0. So measuring power factor on the tool when it is not under load demonstrates nothing except that BOLTR doesn’t know what he’s doing when it comes to electricity either.
All of these can easily be rectified by RTFM and BOLTR even admits in the video that he needed to RTFM. That might be a start.
So let’s see…clueless on electrical, mechanical, materials, what information in this review should I be thinking that there’s a problem with the DD? I’d welcome an honest review but this one is anything but! Dishonest is more like it.
