Happy HolidaySs Giveaway - Last Sponsor Giveaway of the Year!

Come Enter the BrewDeals/FastFerment Giveaway!


Home Brew Forums > Home Brewing Beer > DIY Projects > Rare earth magnet question
 
 
LinkBack Thread Tools
Old 07-17-2012, 06:08 PM   #1
janitorjerm
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2010
Location: The Woodlands, TX
Posts: 161
Liked 8 Times on 7 Posts
Likes Given: 13

Default Rare earth magnet question

Are these a good size and strength for my stir plate or are they too much or too little? I did a search on the magnet but didn't find anything. All help appreciated.

http://www.magnet4less.com/product_i...oducts_id=1114

__________________
janitorjerm is offline
 
Quick reply to this message
Old 07-17-2012, 06:21 PM   #2
beau_cephus
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2011
Location: , Dixie
Posts: 36
Default

I picked up 10 5mm Dia x 3mm thick Rare Earth magnets from these guys http://stores.ebay.com/bluestone002 on ebay.

I just installed them on my DIY stirplate and they worked well with my 1" stir bar when placed directly on top of the stir plate. I dont have a flat bottom glass container to test it out with.

I probably have 1/8" (3mm) gap between my magnets and bottom side of my cigar box. The cigar box top is probably 1/8"

__________________
beau_cephus is offline
 
Quick reply to this message
Old 07-17-2012, 06:24 PM   #3
janitorjerm
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2010
Location: The Woodlands, TX
Posts: 161
Liked 8 Times on 7 Posts
Likes Given: 13

Default

Is a 1" stir bar the "norm"?

__________________
janitorjerm is offline
 
Quick reply to this message
Old 07-17-2012, 06:50 PM   #4
rekoob
HBT_SUPPORTER.png
Feedback Score: 0 reviews
 
rekoob's Avatar
Recipes 
 
Join Date: Feb 2011
Location: Norfolk, VA
Posts: 1,150
Liked 70 Times on 59 Posts
Likes Given: 6

Default

I used a hard drive magnet, I think if your using two of them you should be okay. I also use a 1" stir bar and a few of the containers i use don't have flat bottomes but the stir bar stays in place. I even used a 1 gal jug a couple times and the 1" stir bar worked fine.

__________________
rekoob is offline
 
Quick reply to this message
Old 07-17-2012, 07:24 PM   #5
janitorjerm
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2010
Location: The Woodlands, TX
Posts: 161
Liked 8 Times on 7 Posts
Likes Given: 13

Default

If I could find a hard drive that would have been first choice but it seems like when you need something you can't remember where you put it. I was going to use two or three of these magnets instead.

__________________
janitorjerm is offline
 
Quick reply to this message
Old 07-17-2012, 07:27 PM   #6
rekoob
HBT_SUPPORTER.png
Feedback Score: 0 reviews
 
rekoob's Avatar
Recipes 
 
Join Date: Feb 2011
Location: Norfolk, VA
Posts: 1,150
Liked 70 Times on 59 Posts
Likes Given: 6

Default

a few others have said they doubled up on the magnets and it worked great so you shouldn't have any issues.

__________________
rekoob is offline
 
Quick reply to this message
Old 07-17-2012, 07:31 PM   #7
janitorjerm
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2010
Location: The Woodlands, TX
Posts: 161
Liked 8 Times on 7 Posts
Likes Given: 13

Default

So should I get them thicker or stack them

__________________
janitorjerm is offline
 
Quick reply to this message
Old 07-17-2012, 07:37 PM   #8
DSmith
Feedback Score: 0 reviews
Recipes 
 
Join Date: Sep 2011
Location: Robbinsdale, MN
Posts: 786
Liked 62 Times on 52 Posts
Likes Given: 12

Default

The ones in the link should work well in a flat bottomed flask.

I put a pair of these on a fan and the magnetic field is crazy, 1-5/8" stirbar always self-centers in a with a curved bottom gallon jug.

http://www.grainger.com/Grainger/Dis...AF2?Pid=search

__________________
DSmith is offline
 
Quick reply to this message
Old 07-17-2012, 07:59 PM   #9
janitorjerm
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2010
Location: The Woodlands, TX
Posts: 161
Liked 8 Times on 7 Posts
Likes Given: 13

Default

I just ordered similar ones in 7/16 from a different site. They may be magnets4less but they are shipping for more. They tacked five bucks on my order for being less than five dollars and the minimum shipping they offered was ten dollars. Seems a bit steep to me .

__________________
janitorjerm is offline
 
Quick reply to this message
Old 07-17-2012, 08:04 PM   #10
janitorjerm
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2010
Location: The Woodlands, TX
Posts: 161
Liked 8 Times on 7 Posts
Likes Given: 13

Default

Here is what I went with.

https://www.kjmagnetics.com/proddetail.asp?prod=D72-N52

__________________
janitorjerm is offline
 
Quick reply to this message
 



Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
DIY stirplate magnet orientation Homercidal Chillers and Stir Plates 17 03-21-2014 05:02 AM
Stir plate magnet question (Pull strength) phoenixs4r Chillers and Stir Plates 7 12-27-2013 05:00 PM
Why does my stir magnet fly to the side of the flask? CourtHouseBrewing DIY Projects 21 04-10-2012 02:10 AM
Magnet help? tmd49 DIY Projects 1 01-21-2012 06:14 AM
strir plate/magnet ?..... drunken clown Chillers and Stir Plates 8 03-11-2007 07:16 AM



Newest Threads

LATEST SPONSOR DEALS