How to get electronics around a rotating joint always perplexes me, this cleared up one method!

thankyou for making this amazing video! I've asked myself for years how they are able to supply power trough a free turning joint and just couldnt find any information on it whatsoever, util this popped up! Great work :)

videos like this one is what made KZfaq great. . .

Making your own slip-rings, now that's self-sufficient!

You're making me starter. Now I don't really have an excuse for the stupid mistakes I make in the shop and all of my scrap wood from those mistakes.

I made a suggestion on another channel with marble machines, and I want to make that same suggestion to you. Why not make the rails that the marbles run on hot with a POS and NEG and the steel marble completes the circuit and maybe lights up some LED or even starts and runs a motor for short durations? I think it would be cool to have lights, and more actions going on like a spinning wheel as the steel ball rolls around. Just a thought here. I LOVE your videos and please keep up the GREAT work.

Thanks, Ronald, for the reply. I can't send you a note any other way, either. I've scoured the business for what I was looking for and they're there, but expensive. Will continue on!

Funny thing, when I built my shop I never intended to do any woodworking (and had not done any woodworking) so I did not insulate or heat it. It is a solid steel building and like trying to heat a giant radiator. I would die of the exhaust before a kerosene heater would raise the temperature 10 degrees - tried it. :-)

I saw your comment on denha’s channel. It is actually something I have considered for a low voltage circuit. The spacing of the rails needs to be VERY precise for the bearings and they are usually held apart by a bent piece, which is soldered to both. Maintaining the spacing of the two rails while not having them connected is problematic to say the least. I have considered a third rail, which is very problematic for any contact duration while not slowing or stopping the bearing.

Your ideas and creativity never take a holiday nor cease to amaze! Why not consider one of those kerosene heaters for the shop on those cold winter days? I use one and it only takes a few minutes to warm things up to a comfortable level. Their fuel consumption is what I'd call fairly reasonable. Just a thought.

it would be a great idea to put an axial bearing, between the two separte platforms, the stationary and the movable parts. 👌

Heavy-duty industrial versions are used every day. The motor in my video is small, amperage low and the brass ring relatively thin. Wiper brushes would need to be at least the same size used in your grinder. Probably best if there are separate wiper brushes for each grinder. Highest amps are at starting-up and when grinding. Do not overload the grinder. No load start. Light touch when grinding. Google ELECTRICAL SLIP RINGS for commercial products and they are enclosed and insulated. Good Luck.

You sir, are a brilliant man.

Block machined from Delrin (acetal resin or Polyoxymethylene plastic) which machines, drills and taps well. Brushes from Arrowhead Electric Co. No. 406 Round Brush. You’ll have to do some Google searches for Electrical Slip Ring. They are available from 3 to 60 rings but you will need to determine what suits your purpose (dimensions, voltage, current handling capability, RPM, etc). Good luck!

Very cool Ron,

Awesome video, this explained everything to me why slip rings are the best option for a project I'd doing. Thanks Ronald

I was wondering if the brushes could be replaced with ball bearings to reduce friction and wear ... I can see that my suggestion could lead to electrical arks in a case of misalignment of the metal balls.. anyways Great vid!

eres genial amigo, he intetado hacer este tipo de pistas pero sin tener un resultado bueno como el tuyo, gracias por el dato, saludos desde Mèxico

Don't have a 12v motor. No children around here. I'm told I'm the biggest kid around these parts. :-)

Thanks Sir, for the idea Time to destroy my another charger.

Unless I'm missing something, it'd be very easy to but an insulated shield over that so that there's no chance of exposure to the hot leads.

Maybe. I'm not done yet. Don't want to build anything until I can tell what else might get in the way. When it is running, it won't be that accessible.

I see what you're saying now. Why not use heavier wire where current is used so they do not need to be soldered together? Or what if your 3rd rail was ABOVE the bearing and it rolled through a series of dangling lightweight wires that hung down freely and were the other side of the circuit? As the ball rolled through the hanging wires, it just keeps completing the circuit or it could even complete a different circuit for each wire?

Great video Ronald. What material did you make the block out of for the electrical connections that house the springs and the carbon brushes. I've tried to do searches and I'm not able to find that style of carbon brushes. Do you know where I can find those materials to make my own? Also you mentioned that they were available already made commercially. Do you know if they are available in a 4 contact style? If so where? I'm looking to create a setup with 4 rings.

So cool! Great explanation too>!

With winter setting in, the unheated shop is going to become miserable. So, the completion may be a while.

You do nice work!

Hi Ronald. Thanks for the great video. Do you know if a small slip ring can be made for something like a power strip/surge protector? It needs only to be one circuit, turn 360 (doesn't have to spin - ever), about .5"D...but handle 30A. Doable?

I wanted to do somthing similar to this with my motorcycle .. there is a company that sells the kit for 290 . Gives your wheels power so you can insert leds and power while driving . But they make a slip ring with 3 different rings for 3 different powers for each light color . Did you order these slip rings to have them made ?

Genius

Ron, I'm wondering what kind of amperage do you think this could be used up to? I have an idea for putting two grinders on a turning base and think this would solve the problem of the cords tangling.

Nice job. Quick question did you get any anomalies in voltage (spikes drops distorded wave form etc). I am asking because I would like to do something like that but electronics will be powered and anomalies like described above are not a very good thing. Also would it be possible to pass through more complex signals like VGA or HDMI wit the addition of rings of cource.

Awesome video mate!! Do you have access to a cnc or did you pay someone to cut this out And do you have more infomation on how you made the brushes?? Cheers

Great job, and looks professional! I can't seem to find that big Delrin cube. Instead, do you think it would work if I drill a piece of wood block and insert the brushes in it?

Now i know how does ferris wheel works

thanks for sharing

This is great! If I use this concept for 12 volts DC, one ring would be positive and one negative, right? Second question: Where did you get those graphite brushes??? I have never seen them in that length before!

excellent

Very cool!

Ron Good vid, in the US you have 110V and I note you say about not sticking your fingers in it so I am assuming you are using the grid supply of 110 VAC, Would there be any reason why I could not achieve the same over here in Spain with 220 VAC, It can all be sealed in a box, I want to make a turntable and have a 220 volt supply on the turntable to power items turning which I would not be able to do and these items are AC voltage. I was thinking of using slip rings of ebay but the wires dont seem thick enough, for a socket here we are supposed to use 2.5mm so the motor that drives the turntable will DC I expect and the voltage ontop of the turntable will be 220v in a closed socket

Hi! Does the surface area or gauge of the brass sheet effect anything?

Ronald Walters@ How much power can be transformed through slip wring? I am working in a factory which blow moulding machine have 31 servo motor.

I need a slip ring about that size and design. Would you be willing to share the design were I could have one machined like that?

Where can I buy an electric slip ring commercially from and would you happen to know the sizes which I might beagle to find them in?

Where can I get a slip ring like that? I want to put it on my motorcycle brake rotor to light up led on wheels.

Does this work for audio signal without noise?

Where can find or buy that circles ?

Why you no 12v? Household current is hardly something that I'd have open to fingers when those fingers may be small children who are enthralled with what they see.

Interesting. I'm in the process of trying to find materials to make a 12VDC (low amperage) rotary connector for a "powered ground board" on a Dobsonian style telelscope. I can do a CAD drawing but in my area finding a way to fab it will be difficult. I'll probably end up hand-making it, or buying something like this: www.astrosystems.biz/ASPFTinst.pdf

instead of flat disc slip ring how the normal one i.e circumferential slip ring are made? By what insulating material it is been made? I want to know about them. how can i contact you? please give me your mail id sir.

What is the name of the device that appears in the minute 1:39

To be very pedantic, only one of the two rings is hot. The other is neutral.