Me again. Lucky you! Thanks Nell for this series. It's given me some ideas. I have a drill-mill that needs a great deal of hand cranking to raise and lower the head. I don't want to lose manual control which is what happens with a lot of directly coupled motor designs. I'd thought about an electromagnetic clutch but had little idea of how to implement one - now, thanks to you, I have. Keep rocking.

@NellsMechanicalManCave

Жыл бұрын

Hi again Robert. As I previously commented. Might be worth a visit to a scrap yard and get the complete clutch off a car ac pump. Another viewer did this and said it worked brilliantly. Could work out cheaper too. Cheers Neil

Hi Neil. Thanks for the shout out. I have a small collection of stickers that need to go up on the board. Been a bit busy lately, so got very little done, but got some hopefully interesting things coming up, and can get a video out before long. I too am guilty of making without thinking, take my electric mower project for example, I'm basically tearing it apart and starting again because although it works, it's just not suitable for actual use. I think part of the fun of tinkering is to not think too much, just enjoy the process. I like your idea of the electromagnetic clutch, I have had a power feed on the back burner for years now, I was just going to use a toothed belt and tension it up when I need drive, but you're making me think now. Stop it. It hurts!

@NellsMechanicalManCave

2 жыл бұрын

Now then! I'm sure you have already thought out how to switch the drive direction, switch the magnet on and off and boil the kettle at the same time. Just remember! Don't stir the coffee to quickly with the mill😳

Great work Neil. We all live and learn!

@NellsMechanicalManCave

2 жыл бұрын

Going to put a sign up in the shed. "Look before you Leep" 🤣🤣🤣 Thanks for the comment. Cheers Neil 👍

Hey Neil, we live and learn. The extra breeze can only help. You have the same printer as my son, I need to get him busy! Best wishes, Dean.

@NellsMechanicalManCave

2 жыл бұрын

The Ender 3 is a great tool Dean. Best you borrow it mate 😉😉

Hello Neil, We are all wise after the event... the main thing is that you've solved the solutions... Take care. Paul,,

@NellsMechanicalManCave

2 жыл бұрын

Solved is a strong word Paul. Fell over it is closer 😁 Thanks for Watching Cheers Neil

Some you win some you loose , but you get there in the end and that's all that matters .Thanks for keeping us updated .

@NellsMechanicalManCave

2 жыл бұрын

Thanks Steve. It's good to share ideas, but sharing mistakes benefit more 😊

Problem identified, problem solved. I would call you Mr. resourceful.

@NellsMechanicalManCave

2 жыл бұрын

Thank you Joe !

Hi Nell. No, that is NOT a mistake. I, and I am sure you as well, am a great believer in defence in depth. Your valuable clutch idea will last even longer with the added cooling. Long enough to see both of us out! One small point, the resistance of copper increase with temperature rises. Just as well, it means the heating effect is self limiting. The big concern would be about burning out the windings which is why the addition of air cooling is so important.

@NellsMechanicalManCave

Жыл бұрын

This is still work in progress. Saying that, I haven't done much with it for a while. A viewer commented recently that he used the entire assembly off a car and he said it works like a dream. Thanks for the comment Cheers Neil 😊

Hi Neil That's a great design for the fan, don't write it off too soon, when you get in to mass production work you might need it!!😉. That 3 d printer is amazing, don't forget i might enrol on to your student course one day, when i am at a loose end, iv'e been waiting 50 year for a loose end to arrive though, but i never say never!!🤣🤣😉😉👍👍👍👍👍👍👍 see you next time, i'm already a member of olly and jim's club's take care Kev

@NellsMechanicalManCave

2 жыл бұрын

Hi Kev. If you take the plunge, I'll be on the end of a phone to help when needed 😊😊😊

If we stop making mistakes, we stop doing anything at all. Learning from screw ups, that's what makes it interresting.

@NellsMechanicalManCave

2 жыл бұрын

Showing screw ups is also important. Wise words Michel 👏

Hey, Neil. Your mistake was our gain. You ended up making a very enjoyable and educational video. I am increasingly tempted to invest in a 3D printer. They sure look useful. 👏👏👍😀 Andrew

@NellsMechanicalManCave

2 жыл бұрын

Andrew! They are worth the money. Even if you only go onto Thingiverse and download designs and print them. I started doing very simple designs on Tinkercad but soon started feeling my feet. Half hour on the design and set the printer going then go do something else. That's the beauty of them, they make as you do something else 😊

@andrewdolinskiatcarpathian

2 жыл бұрын

@@NellsMechanicalManCave Thank you Neil for the further encouragement. Umm. Need to have a serious look at what machine to buy.

@Man-in-da-shed

2 жыл бұрын

@@andrewdolinskiatcarpathian It must be an asset to print custom parts when needed, I’d love one but I just don’t have any space at all for one .

@andrewdolinskiatcarpathian

2 жыл бұрын

@@Man-in-da-shed Exactly Ian. I am jealous of all those who can design and print such lovely enclosures etc. it makes their projects look so very professional. But as you say, that dreaded word crops up …………… “space”. 🥴

@NellsMechanicalManCave

2 жыл бұрын

matthews mines in the front room. They dont do cold and damp it effects the filament. Not saying you should do this mind, might lead to other things following it 😉😉

Ha, that's pretty minor compared to one of my big "Why didn't you....?" When I added the flood coolant to my bandsaw and it was freezing in the winter, I decided to add a heater to the tank. Several people said, "Why didn't you just add antifreeze to the coolant?" and I had to admit that I just didn't think about it. :-)

@NellsMechanicalManCave

2 жыл бұрын

A case of engineers overthink, I think 🤔 Hang on! I think I thought too much again 🙄🙄🙄🙄🙄

Hi Nell… Neat fix.. Methinks you like gadgets..ATB

@NellsMechanicalManCave

2 жыл бұрын

Hi Paul! The printer serves two purposes. It can do complex jobs that have no structural requirements and it does it without you. Doing mundane jobs like multiple brackets, fixtures and fiddly bits are done with a press of a button that leaves you to do other things. It's a great tool but has its limitations and as long as you know them, your time can be freed to do more exciting stuff. Thanks for Watching Cheers Nell

Nice and interesting video,i really enjoyed it

@NellsMechanicalManCave

2 жыл бұрын

Thanks for the kind comment. I'm still playing with the idea and it's not perfect but its getting better. Thanks Neil

good video

@NellsMechanicalManCave

2 жыл бұрын

Thank you ! It's good to show your mistakes and errors. Just subscribed 👍 Thanks Neil

Allo Neil from a fellow Taff well west of you, Just found your musings and love that fact that someone is showing that it can be done with no budget, warts an all ! Re your issue with the magnet being powered all the time. I'm no elecchicken (to quote another enjoyable gentleman on this platform - AVE) but could you not use a double pole switch for your direction switch and use the 2nd pole to switch power to the magnet? That way magnet will only power up when you engage direction..

@NellsMechanicalManCave

Жыл бұрын

Hi Adam (Man of Wales) I did solve the issue after fitting the cooling fan but didn't video it. Instead of another switch (I'm lazy and flicking two switches seemed like hard work😊) I connected 2 micro relays to the direction switch on the speed controller. The outputs of the relays were joined together and these now power the magnet. So,,,, the magnet only works now if a direction is selected. I did have to spend £4 for the relays though 😪. Hope to get back to reproducing more videos soon. I have no feeling in my legs ATM and fall over a lot. Not good when running a lathe or mill 🙄🙄 Cheers Neil

Gday Niel, I’ve been toying with the idea of a 3d printer for a while now, there not cheap and I wonder if I’d get enough use to warrant to one, great job mate, cheers

@NellsMechanicalManCave

2 жыл бұрын

Hi Matty. That printer keeps me sane mate. When I cant tolerate being stood up in the workshop it keeps my brain busy. Cheers Neil

He who doesn't make mistakes never makes anything! Making them really just means you're stretching yourself to cover new areas. And anyone who does metalworking knows that new areas tend to have lots of hidden sharp things to cut yourself on. 😲

@NellsMechanicalManCave

2 жыл бұрын

Wise words Doug, thank you sir!

@douglashank8480

2 жыл бұрын

That's a good solution! (Says the guy who doesn't have a 3D printer, LOL) Your opening words in this video are about a lesson in Thinking. ...and now you've got me thinking too... I'm kind of surprised that the magnet getting that hot in the first place though. You may have already checked/done these, but a couple of possibilities come to mind: 1. The power supply. Could it sending more voltage than it's supposed to (or is the resistance of the magnet coil lower than it should be)? Quality control in the manufacture of components isn't always as good as I think it should be. 2. Does the metal plate on the back of the magnet have a good (ie. large and smooth) thermally conductive path to the aluminum plate and/or the mill castings? ...I went back and watched part 2 of the series but couldn't see clearly. (The shots are cut so that we go straight from the magnet and plate sitting on a table, to seeing the two of them mounted together on the mill.) If you have - or can generate - enough good contact area, sandwiching some heatsink compound between them might work wonders. Thanks again for sharing your work with us. Now that I've discovered your channel, I've got a lot of material to catch up on! 😊😊

Interesting...

@NellsMechanicalManCave

2 жыл бұрын

Thanks Danny. A good exercise in design and 3D printing but not a good example in thinking 😕

We've all made schoolboy errors.... Don't beat yourself up... A correction: When normal conductors get hot the resistence goes up, and when that happens, the current drops....

@NellsMechanicalManCave

2 жыл бұрын

See! I've made myself look a dick again 😂😂😂 I realised once I'd posted the video and thought, stuff it. I cant be arsed to pull it and re-edit👍👍

@BensWorkshop

2 жыл бұрын

@@NellsMechanicalManCave You got the result right.... Don't be too hard on yourself!

So remind me again who doesn’t do CAD? You old sandbagger - LOL. Sure looked like CAD to me. BTW very nice finish on the print.

@NellsMechanicalManCave

2 жыл бұрын

Dan ! That's not CAD, it's Lego for men in their 50s 🤣🤣🤣🤣

@houseofbrokendobbsthings5537

2 жыл бұрын

@@NellsMechanicalManCave I concede its Lego CAD. Still darn clever design. Next step a small peltier cooler. On the back side - LOL just kidding.

@NellsMechanicalManCave

2 жыл бұрын

@@houseofbrokendobbsthings5537 Dont kid! I considered that just before I though " what if I turn it off" 🤔🤔🤔🤔

Very nice video my friend 🍉🍇thanks for sharing 🍉🍇🍉🍈🍈🍈🍇

@NellsMechanicalManCave

2 жыл бұрын

Thank you my friend. I'm not that good at videos but sharing ideas and showing mistakes benefits everyone. Thank you for the very kind comment. Cheers Neil 👍🏻