Kevin Zito
KNIFE MAKER
Does anyone have any experience with rare earth magnets? Are all N52’s created alike? Same quality? Are certain companies/brands better than others? thanks. z
Rare Earth Magnet Source
- Thread starter Kevin Zito
- Start date
Daniel Macina
Well-Known Member
Following. I need some for a upcoming project. Amazon has a good selection but I don’t know about quality.
J. Hoffman
Dealer - Purveyor
I get mine from KJ magnets. I've never tested one brand against another. I have a feeling they all come from the same factory in China.
springer82
Well-Known Member
Rare-earth magnet - Wikipedia
It's hard to say. The Neodymium magnets seem to be the good ones. I just use the large welding magnets to help with grinding.
Sean Jones
Well-Known Member
That's what I do. The welding magnets are a real help when creating a tapered tang.Rare-earth magnet - Wikipedia
en.m.wikipedia.org
It's hard to say. The Neodymium magnets seem to be the good ones. I just use the large welding magnets to help with grinding.
Jason Volkert
Well-Known Member
I get all mine from aliexpress for cheap and they work good
tkroenlein
Well-Known Member
I have used these at work. They are scary strong and cheap enough.
www.mcmaster.com
McMaster-Carr
McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.
Kevin Zito
KNIFE MAKER
Thanks for the info guys
It seems that most N52 magnets are about the same, and the best source depends a lot on the size/shape of magnet desired. Here's a set I used for the magnetic chuck of my SGA: https://www.amazon.com/dp/B075WRM6S7/
Ken I am getting ready to make a mag chuck for a surface grinder attachment. Did you use steel or aluminum for your base?
Tracy, I used aluminum bar for my chuck and it seems to work just fine. Main reason I used aluminum was because it's easier to machine on my milling machine. I've been told steel works better than aluminum because it magnets stronger - not sure about that. Most of us epoxy the magnet into the slot. Reeder uses steel, and does not epoxy the magnet to the slot. They say the magnet stays in the steel slot just fine, and removing the magnet makes it easier to clean grinding dust from chuck. I'd like to try that, but what I've got works for me.
Daniel Macina
Well-Known Member
You would of course have to find the right size but I’ve often thought these would be nice on a SGA. Make cleaning easy.
There is one manuf of SGA who is using those magswitches. They put two of them on the chuck, not sure which they use, I think it might be this one:
https://www.amazon.com/dp/B003FWERRC/
I found it, BlackFox SGA: https://blackfoxknifeworks.com/knifegrinder/black-fox-glide-surface-grinder I do wish they showed more photos of the SGA to see how it's done. Here's a prototype they show
- since they're still showing prototype not sure where they're at in production. They do have it priced at $1300, but I'd sure like to see the final product.
https://www.amazon.com/dp/B003FWERRC/
I found it, BlackFox SGA: https://blackfoxknifeworks.com/knifegrinder/black-fox-glide-surface-grinder I do wish they showed more photos of the SGA to see how it's done. Here's a prototype they show
Daniel Macina
Well-Known Member
Thought I had maybe seen them used but wasn’t sure. Sorry would’ve given credit where credit was due.
I do have a surface grinder but it's a stone wheel and is slooooooooowwwwww. My plan is to rough it down with the SGA and then hit with the stone wheel to get where I want. I am probably going to try aluminum since we have plenty of 1" plate around here.