Thread: Mag Transfer Block

Sorry about that guys. I have recently given up the PC and bought a Mac. It doesn't seem to be affected...yet.
No warning or anything.

Phil

Originally Posted by Steamwhisperer

Sorry about that guys. I have recently given up the PC and bought a Mac. It doesn't seem to be affected...yet.
No warning or anything.

Phil

Hi Phil,

No danger, there is an encoded iframe tag at the bottom of that page, which is a technique commonly used to install malware, I've looked at the code and it calls a cgi script on another web site, which is where you'd expect some dodgy exe to be lurking, but there's nothing there, just a blank html document, so I don't know? maybe it just hasn't been activated yet..

Either way, the malware would be very likely written for windows, a dodgy exe file isn;t going to run on the mac, won't run on my linux box either

I've sent an email to the people who run the web site as a courtesty anyway,, ( plus asking for info on silver solder paste as well of course )

Regards
Ray

Originally Posted by RayG

Hi Phil,

No danger, there is an encoded iframe tag at the bottom of that page, which is a technique commonly used to install malware, I've looked at the code and it calls a cgi script on another web site, which is where you'd expect some dodgy exe to be lurking, but there's nothing there, just a blank html document, so I don't know? maybe it just hasn't been activated yet..

Either way, the malware would be very likely written for windows, a dodgy exe file isn;t going to run on the mac, won't run on my linux box either

I've sent an email to the people who run the web site as a courtesty anyway,, ( plus asking for info on silver solder paste as well of course )

Regards
Ray

Hi Ray,
Thanks for sending them an email.
I'm a bit worried about posting links now. It seems everyone copped a warning.
There must be a way I can check before I post.

Phil

Yes, there is. Encourage everybody to abandon Microsoft and all of its evil works. Purely Mac for four years now. Time spent on domestic IT troubleshooting: 0.00 minutes.

Yea but i dislike walled gardens, even the most comfortable jail is still a jail .... I want to go to a something every now and then should I want to.

Originally Posted by .RC.

Yea but i dislike walled gardens, even the most comfortable jail is still a jail .... I want to go to a something every now and then should I want to.

OS X is *not* a walled garden, unlike IOS which I don't use. I run a hell of a lot of open source code on my Macbook. It's far more open than Windows.

Want to run a Windoze only program? Parallels and Windoze in a sandbox. Virus immunity; if the VM gets corrupted you delete it and install from a clean backup.

Not worth flogging this dead horse. Those who don't want to learn can't be taught. Using Windoze as an o/s is like using an Atlas lathe when you could use a Monarch 10EE.

PDW - 385 days continuous uptime on my laptop including numerous trips interstate and all over the place. Only reason for shutdown/reboot - added more RAM.

Hi Ray

What steel did you use for the steel part ?

Cheers
Fred

Originally Posted by twopintsplease

Hi Ray

What steel did you use for the steel part ?

Cheers
Fred

Hi Fred,

Just normal mild steel, hot rolled I think. I had to laminate 3mm thick pieces and 10mm thick pieces together to get the thickness I needed to match the pitch of the poles on the existing electromagnetic chuck.


Regards
Ray

Very nice Ray, have you done any testing ?

Magnets are strange creature's, I have a copy of a (thick as a brick) magnet book somewhere that I used
once upon a time to try to understand how to concentrate a flux path, so I am very interested to see how
well your transfer block works.

Originally Posted by shedhappens

Very nice Ray, have you done any testing ?

Magnets are strange creature's, I have a copy of a (thick as a brick) magnet book somewhere that I used
once upon a time to try to understand how to concentrate a flux path, so I am very interested to see how
well your transfer block works.

Seems to be working fine, the parts cover three poles, and there's no way I can dislodge them without turning the mag chuck off.
I'll take a few pictures of the setup later today.

Regards
Ray

PS I've got some stuff by Eclipse on mag chucks, but I'd be interested to find out what that book is?

"PS I've got some stuff by Eclipse on mag chucks, but I'd be interested to find out what that book is?"

G/day Ray, Permanent Magnet Design and Application Handbook, Lester R. Moskowitz Second Edition.

I loaned the book from the Alexandra library, it was an inter-library loan and it took a couple of months to land in my mitts, I think the book cost about $500 back then so I photocopied the main body of the book (290 pages) for 10c/page at the primary school.

You are quite welcome to loan what I have of the book but I didn't copy the last 600 odd pages, see the photo of the index, if you can also loan it from the library it would be better for you, if you can't I can post my limited copy up to you.

I found this link, tiz only $200 now.

john

Permanent Magnet Design and Application Handbook: Lester R. Moskowitz: 9780894647680: Amazon.com: Books

Hi John,

Thanks for that link, looks like a good book. It's now on my list of must get books.

This is the way I'm setting it up. I've still got to make up some alignment bits and pieces, but the holding force with the
electromagnetic chuck is incredible. I can't budge the blade at all.



In the above picture the blade isn't discoloured, it's a reflection.



Here's some nifty tricks with magnetic chucks..
A way of rotating the magnetic field by 90 degrees.. from the eclipse manual



A way of concentrating the flux using flux dams



Regards
Ray

Fabulous, no doubt in the back of your mind you were thinking it might not work properly after all the time you had to put into it. Is there much residual magnetism in the transfer block ? If so this would be an asset when setting up a number of blades to hold them in place.

The horse is off and running now, what new and wonderful eclipse attachments are going to evolve out of this ?

john

Interesting read here Making magnetic transfer blocks