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Old 8th March 2013, 08:29 PM   #1
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Default Glue for rare earth baffle magnets?

I need to glue and recess some rare earth magnets into my baffles before veneering. I am planning to use epoxy but I figured that I would post here first to see if there is anything else that should be considered.

Thx
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Old 8th March 2013, 08:40 PM   #2
tinitus is offline tinitus  Europe
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silicone ?
(but depends on whether you want metal contact)
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Old 8th March 2013, 09:00 PM   #3
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I put them on the inside of the baffle, but any glue will do. I've glued them in the outside as well....just used yellow glue.
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Old 8th March 2013, 09:07 PM   #4
JMFahey is offline JMFahey  Argentina
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Being metallic carpenter's glue is weak, no pores to grab.
Use silicone/contact_cement/epoxy.
Degrease before glueing.
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Old 9th March 2013, 12:04 AM   #5
sreten is offline sreten  United Kingdom
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Hi,

Anything will do, including bog standard wood glue.

Using a good filler is probably you best bet though,
if you want them to be completely invisible and
need to flush the holes before veneering.

rgds, sreten.
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Old 9th March 2013, 02:29 AM   #6
Bare is offline Bare  Canada
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Many glues will hold onto the plating of the things. CA, Epoxy, Sillycone
Bigger issue is to plan on eventually having to replace them.
Platings will flake off ,sooner or later, then the exposed to air neodym magnet material will start to oxidise/crumble into toxic powder.
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Old 9th March 2013, 02:40 AM   #7
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Quote:
Originally Posted by Bare View Post
Many glues will hold onto the plating of the things. CA, Epoxy, Sillycone
Bigger issue is to plan on eventually having to replace them.
Platings will flake off ,sooner or later, then the exposed to air neodym magnet material will start to oxidise/crumble into toxic powder.
even if they are buried in the baffle, veneered and covered with varnish?
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Old 9th March 2013, 02:44 AM   #8
guangui is offline guangui  Puerto Rico
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Bubble gum works great...But, my favorites are contact cement, and epoxy. Like someone else mentioned degrease and clean well for better contact, and always follow the label instructions. If using bubble gum, Bubbalicious and Big Chew are the best to bond anything to wood, just ask students, teachers, secretaries, and maintenance personnel. Remember to chew until extremely wet and with a putty like texture.

Last edited by guangui; 9th March 2013 at 02:47 AM.
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Old 9th March 2013, 03:22 AM   #9
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guangui,
I didn't know you were so funny after the mess on the B&C thread with the Canadian!

Kooshball as long as you cover the entire magnet with epoxy you should not see any corrosion. Cover both front and back and edges of the magnets and they should last a lifetime. Now on the epoxy side of things you have a couple of choices. If you think that you may want to remove the magnets for some reason in the future use a fast 5 minute setting epoxy, they are the weakest formulation and will remain somewhat rubbery even when set. If you never want to take them out use a slow drying epoxy such as Two Ton Devcon formulation, this will be both harder and difficult to remove, another even harder formula is JB Weld which has metallic filler and gets really hard. Remember with epoxy the slower drying formulas are always the strongest formulations and the fast set are the weakest.
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Old 9th March 2013, 04:43 AM   #10
guangui is offline guangui  Puerto Rico
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I don't take things personal, and I'm sure J-A-G is a nice guy. I like to defend the small business, that's all. But, that's water under the bridge and not related to this thread.

I always like to joke and make fun. Life's too serious and complicated as it is.

Quick set Epoxy is the way to go. Good permanent adhesion, but still you can pry off and rework if needed.
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