Thanks!

Glad someone enjoyed it... :P

I'm gonna have to add a "for entertainment purposes only" disclaimer, aren't I? lol Glad you liked it though!

They just take up room. I've still got 3 SATA connectors on the one strand that's in there but I can't ever imagine a reason to add anything else to it.

+Pete Brubaker A few, lol. I honestly didn't give it much thought. I've dealt with a lot of bare switching PSUs in industrial enclosures so I didn't really give it a second thought.

I don't remember the brand since I got them used but look up "cable entry system" and there are several manufacturers and tons of designs for all kinds of cabling. They really are incredibly useful. :)

Most of us in the panel building business call them "Roxtecs" in much the same way that most people call an adjustable wrench a "Crescent wrench."

Oh yea, it works just like before. It's a UC300ETH and C62 breakout board. The PC runs UCCNC.

I'm fairly sure I've missed a whole lot of protocols thus far.

Yes, it certainly would. That's the problem with being a jack-of-all-trades; you learn enough to get the job done and then it's on to the next thing. There isn't enough time to specialize in everything! How much would the box even shield from EMI with that huge hole in the top for the 120mm fan? Thanks for the comment and I'm glad you liked it! :)

That's why we share stuff right Chris? Whether on KZfaq or a forum. You learn by making mistakes, and it takes others to point them out. Don't let the critical comments come off as negativity, because of them you might do something differently and slightly more specialized in the future. :)

Right. So long as people aren't being dicks I'm always happy to hear constructive criticism. :)

And some of the cooling vanes might have quite high voltages even when the PSU is unplugged. The touch can be quite nasty.

First point is valid, it could reduce EMI but so many of the induatrial PSUs I've installed over the years have all been open chassis so I figured it couldn't be THAT bad. And strain relief for sure in a PC but these cables won't be yanked around (hopefully). It's UCCNC and a UC300ETH with C62 breakout board; but that's a topic for another video entirely. :)

Indeed. I found that out with an industrial PSU I was installing on a job; I didn't notice the tiny little lightning bolt sticker on it, lol. I'll have to remember to check that one of these days.

@@ChrisDePrisco Computer power supplies that have 110/220 switches on them start by doubling the 110V line voltage and full wave rectifying it to about 300VDC. The heatsinks will be electricially hot as well. They should never be without a cover of some type. It is also common for computer power supplies to fail so it should be an easily replaceable module.

I really don't think I could have added much without doubling (quintupling?) the length of the video. 6+ hours of checking polarity, labeling wires, making jumpers, etc. A proper tour of how it all goes together will be the subject of another video. I just wanted you guys to get to see the process in as much detail but as little time as possible. :)

@@ChrisDePrisco Just lower the music and talk over the sped up video, no reason to make it any longer.

I've only checked the spindle directly and that's got about 0.0002-3" of runout. as best as I can tell from my 0.001" indicator.

That's why I put that vent right next to it. The 120VAC fan on the front moves a LOT of air and there is a considerable breeze moving across those heatsinks. But if the power cuts out some day I'll know for sure!

Chris DePrisco just hope it doesn't ruin your part while your trying to cut something. I still would have let the fan on PSU decide the temp inside of the PSU because now it's only dependent on "considerable airflow" were as before it was guaranteed to keep the PSU within a certain temp range (unless the fan runs all the time). most PSU power output rating are based off how much air the fan can move across it to keep it cool, and I can guarantee the vent you have next to it won't move as much air as the factory fan. don't get me wrong that's nice work, I would just hate to see a part you have been machining for hours get ruined because your PSU crapped out. it's kinda the same principal as to why you didn't pull the fan off the actual CPU, because you could never match it's airflow.

Chris DePrisco not to mention you now have one fan moving air from 2 holes instead of one so if the fan on front is an equivalent size to the one on the PSU not only have you lowered its capacity through the PSU by getting rid of the air directed cover but halved the amount it's going to be able to pull due to 2 openings instead of one. I'm sorry for sounding negative that's not at all what I'm trying to get across, it just my brain is telling me that was a very bad idea and I really don't want to see something so simple be a big problem.

I get it, don't worry. :) The fan absolutely blows (pun intended) a 120mm PC fan out of the water. Did you hear it run when I turned it on? I'd say it's about equivalent to 4 or 5 regular 120mm fans. There are holes in the cable entry by the motherboard and it was visibly flickering paper a foot or so away. Plus the PSU is only dissipating MAYBE 100 watts of power. It's a ~35W Celron CPU (which is almost exclusively idle), a SSD, the RAM and the signals for the motors. You inspired me to go check and the PSU draws 0.30-0.44A with the machine at full tilt. That's ~40W. :P

I'm with you, should be enough cooling. But these PSUs make some pretty damn good EMV Noise arround it. So might not be the best Option to put them near your Controller Board. But as long as everything works no worries!

Sure, it's CPM-SDSK-3411P-RLN

Thanks! I've read you had a torque problem at 800IPM. If you use a 75VDC power supply (or something near) you shouldn't have any torque problems at all. According to the speed-torque curve the motor still has 0.5Nm torque at full speed. In combination with a 5 mm pitch ball screw this should be plenty enough to move your axes at constant speed or accelerate it with 1g unless the driven axis doesn't outweighs 70kg. But I don't think any of your axis weighs this much. If those 500IPM bother you, you could have a look at the parallelism of your linear rails, stopping servos are a useful indicator for such issues. If they aren't perfect parallel, a servo stops because of the high and fast torque requirement due to material deformation. So even if you're fine with 500IPM you should have a look, it would definitely extend your linear rail's lifetime :-) Or is it the power supply? If you're driving all axes at 800IPM simultaneously your power supply should have a power output of at least 600W.

I am using their 75V power supply. I honestly don't remember what the problem was, I'll have to take a look again through their software while it's running. I kind of stopped caring for the moment though since the machine still wobbles around a bit at those speeds. The panels went a long way but there is still some noticeable movement left above a few hundred IPM. But really, pretty much all of the milling I'm doing is in the 15-150ipm range and 300 ipm on a small machine is plenty fast enough for rapids.

Haha, yea I've got to find some blanking plugs on ebay to fill up the gaps.