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Posted by kfvorwerk@gmail.com on May 14, 2008, 6:13 am
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On May 13, 5:21 pm, gautham.va...@gmail.com wrote:
> While this is not strictly metal related, I'm sure I will get some
> good advice here.
>
> I need to stick tiny (about 1/8th inch dia) rare earth magnets to
> plastic film (think laminated paper) and I am looking for a glue to do
> the job. The result needs to be fairly difficult to break.Tried CA,
> but I can break the bond with some effort. Same with Araldite
> (epoxy).
>
> Any suggestions? Any tips to get it to work better?
>
> TIA - I'm back to lurking now
> Gautham
I'd ask 3M
http://solutions.3m.com/wps/portal/3M/en_US/Manufacturing/Industry/Product-Catalog/Bonding-Solutions/
Karl
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Posted by bob_southshore on May 14, 2008, 9:41 am
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> On May 13, 5:21 pm, gautham.va...@gmail.com wrote:
>
> > While this is not strictly metal related, I'm sure I will get some
> > good advice here.
>
> > I need to stick tiny (about 1/8th inch dia) rare earth magnets to
> > plastic film (think laminated paper) and I am looking for a glue to do
> > the job. =A0The result needs to be fairly difficult to break.Tried CA,
> > but I can break the bond with some effort. Same with Araldite
> > (epoxy).
>
> > Any suggestions? Any tips to get it to work better?
>
> > TIA - I'm back to lurking now
> > Gautham
>
> I'd ask 3Mhttp://solutions.3m.com/wps/portal/3M/en_US/Manufacturing/Indust=
ry/Pr...
>
> Karl
There may be a problem that is more difficult than adhesive. When you
say "rare earth magnet" I assume you are using Neodymium-Iron-Boron
magnets. I used these to make refrigerator magnets with epoxy for a
while. The neo oxidizes very badly. When you bond with epoxy it is
strong for a while and then a film of oxide forms between the magnet
and the adhesive. Then the magnet falls off. You need to get an
airtight coating on the magnet before bonding. I have seen plating
that lasts well.
The problem is the Neodymium, it is the material that makes sparks in
cigarette lighter flints. It is very oxidizable (flammable in powder
form).
I never solved the problem. By the way I still have hundreds of
magnets to sell. They are about .2 dia x .4 inches long.
Good luck.
Bob
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Posted by F. George McDuffee on May 14, 2008, 2:35 pm
Please log in for more thread options On Tue, 13 May 2008 20:21:55 -0700 (PDT), gautham.vanya@gmail.com
wrote:
>While this is not strictly metal related, I'm sure I will get some
>good advice here.
>
>I need to stick tiny (about 1/8th inch dia) rare earth magnets to
>plastic film (think laminated paper) and I am looking for a glue to do
>the job. The result needs to be fairly difficult to break.Tried CA,
>but I can break the bond with some effort. Same with Araldite
>(epoxy).
>
>Any suggestions? Any tips to get it to work better?
>
>TIA - I'm back to lurking now
>Gautham
==========
I would try using a hot melt glue gun while you are waiting for
information. As fast as the hot melt sets up, your biggest
problem may be positioning the magnets. Make a trial for 2.97$US
+SHT click on
http://www.lowes.com/lowes/lkn?action=productDetail&productId=74451-412-MT300&lpage=none
for more info see
http://www.glu-stix.com/
http://www.glu-stix.com/shop/page/Polyamide_Glue.html
and for metal/plastic bonding see
http://www.glu-stix.com/shop/page/product_detail/Product/67136cccf00d511637cd2e7ece2b38b7.html
also see
http://www.hotstik.com/store/pc/HS-376-UltraBonder-Glue-Sticks-Per-Lb-6p43.htm
Unka' George [George McDuffee]
-------------------------------------------
He that will not apply new remedies,
must expect new evils:
for Time is the greatest innovator: and
if Time, of course, alter things to the worse,
and wisdom and counsel shall not alter them to the better,
what shall be the end?
Francis Bacon (1561-1626), English philosopher, essayist, statesman.
Essays, "Of Innovations" (1597-1625).
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Posted by on May 15, 2008, 5:55 am
Please log in for more thread options Will try those hotmelt varieties.
The bond seems to give up on the plastic side i.e. there is adhesive
on the magnet which seems difficult to get off but the plastic surface
is clean.
Wondering if roughing up the plastic film with a bit of sandpaper will
make any difference.
Thanks, Gautham
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Posted by F. George McDuffee on May 15, 2008, 9:50 am
Please log in for more thread options On Thu, 15 May 2008 02:55:23 -0700 (PDT), gautham.vanya@gmail.com
wrote:
>Will try those hotmelt varieties.
>
>The bond seems to give up on the plastic side i.e. there is adhesive
>on the magnet which seems difficult to get off but the plastic surface
>is clean.
>
>Wondering if roughing up the plastic film with a bit of sandpaper will
>make any difference.
>
>Thanks, Gautham
===========
Be sure to let the group know how things work out [enquiring
minds want to know...]
Unka' George [George McDuffee]
-------------------------------------------
He that will not apply new remedies,
must expect new evils:
for Time is the greatest innovator: and
if Time, of course, alter things to the worse,
and wisdom and counsel shall not alter them to the better,
what shall be the end?
Francis Bacon (1561-1626), English philosopher, essayist, statesman.
Essays, "Of Innovations" (1597-1625).
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> good advice here.
>
> I need to stick tiny (about 1/8th inch dia) rare earth magnets to
> plastic film (think laminated paper) and I am looking for a glue to do
> the job. The result needs to be fairly difficult to break.Tried CA,
> but I can break the bond with some effort. Same with Araldite
> (epoxy).
>
> Any suggestions? Any tips to get it to work better?
>
> TIA - I'm back to lurking now
> Gautham