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3 of 14

Strong and mighty rare-earth magnets

Small rare-earth magnets have so much pull that disengaging a jig attached with them may be difficult. Putting in fewer or smaller magnets will alleviate that, but might make the jig more prone to being pushed sideways. Use these permanent magnets for light-duty attachment, such as holding a setting jig or measuring device while you set up a tool. You can usually buy them in bags for around $1 apiece or less.

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3 of 14

Comments (7)

outdoorsrk wrote:

yes please tell where you can buy them for $1 apiece or less

10/4/2012 05:21:36 AM Report Abuse

fsawtelle wrote:

I used 1/4" magnets to hold a plywood back on my tablesaw for better dust collection. Three of them hold, but the plywood is bent slightly and the fourth tends to let go. I used three 3/4" ones to build the bandsaw jig on the cover of ShopNotes vol.20 issue 116. They are so powerful that the jig cannot be lifted off the table. It has a "release knob" that screws a bolt down to raise the jig off the table so you can pick it up. So, from 1/4" to 3/4", the increase in strength is tremendous.

8/16/2012 05:02:27 PM Report Abuse

fsawtelle wrote:

Ray, do you really think you need all 13 of those question marks to make your point?

8/16/2012 04:38:50 PM Report Abuse

raybarker05 wrote:

You can usually buy them in bags for around $1 apiece or less. WHERE DO YOU SHOP ????????????? Really!!! Those things aren't cheap!! They're good, but they definitely aren't that cheap.

8/10/2012 10:22:15 AM Report Abuse

lorenrad wrote:

Size is only one factor that goes into determining the pull of a magnet; so, the simple answer is "no." Some of the factors to consider are the thickness of the magnet, the thickness of the steel you plan to "grab" onto, steel backing or cup for the magnet, air or paint between the magnet and the steel. Your best action is the try some magnets and see what works.

8/9/2012 10:53:48 AM Report Abuse

2562660221 wrote:

You can usually buy them in bags for around $1 apiece or less. WHERE DO YOU SHOP ?????????????

8/9/2012 10:04:50 AM Report Abuse

labrousser wrote:

Is there a way to tell how many lb.s of pull these magnets have based on their size?

8/9/2012 09:47:56 AM Report Abuse