DIY Magnetiser And Safety Switch

[@bioswars8827]

Rob, you're the type of person that could help change the world for the better. A true Eco Guard in every sense. Hope you all the best, and looking forward to your next projects.

[@Kiyarose3999]

For sure! 🌎✊🏽

[@alaingrignon]

Rob, your creativity astounds me. You really have a gift for seeing the usefulness of just about anything. A real-life McGuiver! Carry on mate!

[@tinkmarshino]

I just want to stop here and say thank you Rob.. I used to do this all the time as a lad and even as a man.. But I got hurt about 10 years ago when I was 58 and it took me a long long time to be able to get around.. in that time I "forgot" my curiosity.. Now I can get around ok.. take a lot of meds plus my pain meds.. But thanks to watching your videos my curiosity is awakening again.. I can not wait until summer to get out to my little shop and start to dig around again and start making things out of all the scrap I have out there.. Plus making some of these little projects you have done.. I am actually regaining my excitement bit by bit again.. SO I just want to say thank you my friend.. you have helped to bring life back to this old fart.. and I appreciate it!

[@karlmyers6518]

I just love this post, RMS makes me feel the same way and has for sure changed my life.

[@tinkmarshino]

@@karlmyers6518 ah... Life has meaning again amazing isn't it! all best wishes to you brother

[@karlmyers6518]

@@tinkmarshino I've gone from from strength to strength and running a new business and then finding time to explore. Life is amazing right now and I hope the same for you my friend

[@tinkmarshino]

@@karlmyers6518 I remember those days.. not only did I have my own construction business for 30 years but I helped a few friends and friends of friends start there own .. some were successful some not.. these days I keep warm by the heater and am teaching myself electronics.. Boy it is a lot harder to keep things straight in my old mush pan these days.. must have been the 60's.. ;-)

[@TerryGilsenan]

That was a series of "..and here is one I prepared earlier..". I love it how you provided the _meat_ of each part rather than use up the video time with a lot of brocolli getting to the meat. That was a very good example of continually getting to the point. The Gaussing coil is also very useful.

[@pn4775]

i"m always amazed at your projects reusing bits and pieces from many things.

[@mikebond6328]

Love the compression gland. Engineering marvel.

[@stevetobias4890]

Very cool indeed. It amazes me how you happen to find what you need when you need it. I guess that goes to show what happens when you keep an eye out.

[@brendone171]

you must know what I have been thinking of, as I have a lot of ferrite here and was thinking about making different size ferrite magnets and lo and behold the next day you come up with a magnetizer unreal love the safety switch and keep that brain working

[@Kiyarose3999]

Wasn’t going to watch this, but glad I did, an excellent scrap build, and again well made, love the old saucepan bit, nice touch! 🌎✊🏽

[@MrTubeuser12]

A motor coil and an old tin pot, love it ! :) lately, when I'm out on my walks I've found myself looking at stuff I see lying around and thinking hmm, what could I build with that :) It's all your fault Rob LOL .

[@totherarf]

Love the way you use "stuff"! Also the way you show your enthusiasm through your voice only changing when a safety issue comes up! Looks like 2021 is going to stay interesting ;0)

[@conductiveinkalternative918]

I like it. Using what's available. Going with the flow of live.

[@docink6175]

the magnetizer is cool but I really like the switch idea!

[@peterdkay]

Excellent idea. May pay to put 400V voltage dependent resistor or 1uF 400V across coil to reduce inductive transient when releasing switch. This can be thousands of volts and may kill the switch.

[@hatlangston1379]

Awesome !! I am going to make a switch like that, it is just what I need.

[@chrishayes5755]

every cool thing I want to build and search in youtube robert: well hello again 😂

[@chrisoregan2932]

Another great educational video thank you Robert

[@charlie1872]

I have model trains and have seen a guy in the UK who sells them but cost of shipping to Canada us cost inhibitive. Would it be possible to build one that would re magnetize the magnets on Hornby Triang locos? Thanks

[@GeoffTV2]

Brilliant! Are you a Womble Rob? I seem to remember they were always making useful things from discarded items.

[@mercuryengineseller8638]

Hi Rob, As a fellow maker/recycler/fixer up of stuff I have enjoyed my subscription to your excellent channel for some time now and your post regarding magnetising things sparked an idea in me. I have a pond pump that has failed I think because the ceramic magnet on the rotor/impeller has lost most of its magnetism. It spins freely but is very easy to stop with gentle pressure from a finger. The part is no longer available from the manufacturer. I wondered if your device might re-magnetise it. I would be grateful for your comments. We are of a similar age and I too have one or two battle scars from various projects, but I did wince when you used an angle grinder to cut that tumble drier drum without ear defenders. I hope you don’t mind me mentioning it. I’m sorry this is such a long message but I have one more request from you… could you please give a plug to the various Freegle/Freecycle/Trash Nothing websites ? I have used them many times over the years to get rid of stuff I no longer use or as a source for parts for my own projects. Cheers, Jeremy.

[@charlie1872]

I have model trains and saw a guy in the UK who designed and sells re magnetizers for the magnets. It is expensive to ship to Toronto would this work if do you have another idea?

[@tonysfun]

Love your video! Do I need TWO of these to recharge old horseshoe magnets? Also, how do you demagnetize with this? What kind of motor was this from? Thank you very much for your videos!

[@hanslepoeter5167]

I think current might be higher than in the original induction motor. This coil is made for AC but now you have DC. Coil induction is no more, resistance is still there and will cause power and heating up the coil. If you use it for a long time the coil might burn out. Push the switch for a short time and you'll probably be fine.

[@antoniosantos6442]

I use big solenoid from an old pinball machine to magnatize all my screwdrivers. Works a treat!...btw, what happened to the battery making and research?

[@SuperRama666]

Does the more power you add make the magnetic field stronger? Whats the limits to how strong a force can become?

[@AndyFletcherX31]

Probably best to pass the earth connection through to the "pan"/coil metalwork. Just in case the insulation on the windings fails. Nice project, thanks

[@reubenlongworth3586]

For de gaussing (de magnetising) ) you need ac, used to use degaiussing coils back in the day on coulour TV tubes and magnetic tape heads, using a circular motion and moving away from the job at the same time

[@gilbertsprojects2954]

It’s as if you read my mind when Luke was fumbling around with the screws on that acrylic cutter he made... I’ll say no more, I guess you’ll explain in the next video 👍🏼

[@rickymcguire9493]

Makes me wonder if you could treat some of your conductive inks with this to maybe alter some of its characteristics? Really great use and so simple!!!

[@jamesdaley3223]

Could you use the direction reversal switch of the drill to easily switch the polarity?

[@rl3898]

would an electric drill with a burnt out armature work using its own field? Maybe just cut off the gearbox and put a plastic tube inside ?

[@DeliciousDeBlair]

It would indeed do exactly that! (~_^)-b Great thinking!

[@paulwright8378]

Now that you can design 3d prints an make those wiggly coils you could maybe make those n35 magnets stronger

[@brt246]

Amazing , the only helpful thing I could have done there to assist you would be to remove the saucepan handle .👍😂

[@ryanlebeck259]

So you can make your own magnets then? I could use that to make some magnetic couplings for a project of mine and probably boost output with it. That is impressive and I have a few squirrel cages lounging about that I could use for something like that.

[@karlmyers6518]

I just had visions of a ray gun. Just one question as I'm not sn expert on motors but could I make this from the little heat pump motors I sent you mate. I can see you using this to do thousands of tests to make different magnetic plates for different projects. AWESOME AWESOME AWESOME

[@JavierChiappa]

Trash lying on the sidewalk is god's way of giving free parts to inventors. You always find out the piece you need when you need it, lol.

[@davebashford3753]

Ahhh! How to demagnetize?

[@robin31122000]

Cool. The drill being a plastic body device may not have being using the earth wire. It looks like you are only passing the live and the natural out of the drill body. Should you also be passing out the earth wire since your magnetiser is a exposed metal object?

[@martinwinfield2935]

Your thinking to safely. Just don't stand in a bowl of water when using.

[@davidhilton7780]

3 way toggle after the rect. Will reverse polar hysteresis

[@markhodgson2348]

Have thought about any auduino projects

[@justinorwen1141]

What happened to the gassifier?

[@NeathVideos]

What needs altering to make it demagnetise?

[@madmaveric]

To magnetise you hold the part stationary (allowing the magnetic field to pull all the fields in the screwdriver to align with the magnetic field it is being held in), to demagnetise you move the part up and down through the field (This will vary the direction of the magnetic field the screwdriver is now in, think of it as just turning all the fields in screwdriver it in all directions so the magnetic fields cancel each other out).

[@madmaveric]

A good analogy would be imagine that the screwdriver was just a bag of lose bar magnets. When all the magnets are lying in a different direction (their north and south poles are not aligned) they cancel out and produce no noticeable magnetic field. By holding them in a fixed magnetic field (as seen in the video) it causes them to all turn to line up. Now the magnets all align and produce a strong field as each of the little magnets are adding to the strength of the field. If you move the screwdriver up and down (because the field changes inside the coil from North on one side to South on the other) the magnetic field changes as you move it, this makes all the little magnets turn in different directions as you move it. Now if you kill the field as they are turning (or just pull the screwdriver out quickly) it is unlikely that they will all be pointing in the same direction so the field is weakened (aka demagnetised). In reality it can be hard to completely demagnetise something with a fixed field but it can be good enough so that it would no longer be strong enough to hold the weight of the screw attached to the screwdriver.

[@NeathVideos]

@@madmaveric thank you for the explanation-makes sense 👍

[@barbufodor1186]

Cool! so? are you gonna make some magnets?

[@farkookneebah]

Always entertaining

[@scotttovey]

Now you need to build a box for it that has a clamp at the top which holds the object you want to magnify or de-magnify. This is especially needful if you are going to put something in it for several minutes.

[@Inventive101]

👍👍👍👍👍👍

[@mikeflight9]

Some poor woman left her pot of potatoes to cool on the window ledge and when she comes out, the pot is gone and the potatoes are laying on the ground. 🤔

[@sweltermayo]

magnificent awsomn xoxo

[@gustavfenk4021]

And you could use it to reset grandad's pacemaker...

[@stubluesjhb1]

I like that.

[@scamper_van8470]

thanks!!!

[@BradKarthauser]

Degauss your TV tube!

[@Corialtavi]

I'd feel safer myself putting it in a wooden box and fitting a plastic beaker inside the hole to stand the bits being magnetised in but hey ho I think we know your opinion on being over cautious. I have a personal paranoia about 240v mains based on my own childhood stupidity.

[@mamupelu565]

can you make a magnet gun? :P