DIY encapsulated magnets!

19Mateo83

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In my quest to find affordable encapsulated magnets, I had a light bulb moment. Coin size neodymium magnets and acrylic coin holders. For this project you will need weld on 3 or 4 and these items from Amazon.
7972B3B8-578A-4218-ADE0-C679119506B1.jpeg

D4F1568E-E916-40FA-B7C3-0F05DBC538A8.jpeg
I just happened to have Weldon 3 on hand.
4E915CCB-D9CE-4FC1-84CE-CF4E962BB5EB.jpeg

The idea here is to put the magnet in the holder like you would a coin and solvent weld the cases onto them. Like so. The coin holders come with foam inserts that fit the magnet perfectly .
969ADC58-D231-4168-81D6-5169B9CA6016.jpeg
EC3FC4B6-17DD-4FB2-9F67-5DE226145F96.jpeg

The trick is leaving a tiny crack between the halves for the solvent to run into.
4128CA27-0856-4962-BC85-A3F673A6B67D.jpeg
2230C89B-7148-49DA-854E-5972DAF99B9D.jpeg

Once welded squeeze to insure a good weld.
43864CCD-FBA8-4EBB-82A9-1AAD2030A802.jpeg
A4B6F9D3-2DD7-4429-8748-37468CAC1886.jpeg

And just like that you have encapsulated magnets. I will let these cure out for 24 hours then I will water test them. I chose epoxy coated magnets for redundancy but I like the idea of acrylic encapsulated better. I will report back in a couple days on how the welds did.
 
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powers2001

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In my quest to find affordable encapsulated magnets, I had a light bulb moment. Coin size neodymium magnets and acrylic coin holders. For this project you will need weld on 3 or 4 and these items from Amazon.
View attachment 3114142
View attachment 3114143I just happened to have Weldon 3 on hand.
View attachment 3114154
The idea here is to put the magnet in the holder like you would a coin and solvent weld the cases onto them. Like so. The coin holders come with foam inserts that fit the magnet perfectly .
View attachment 3114144View attachment 3114146
The trick is leaving a tiny crack between the halves for the solvent to run into.
View attachment 3114147View attachment 3114148
Once welded squeeze to insure a good weld.
View attachment 3114149View attachment 3114150
And just like that you have encapsulated magnets. I will let these cure out for 24 hours then I will water test them. I chose epoxy coated magnets for redundancy but I like the idea of acrylic encapsulated better. I will report back in a couple days on how the welds did.
@19Mateo83 at some point you may save me a lot of money. Just don’t know how much more bells and whistles I’ll do. Trying to shift to plug-and-play but this looks like a lot of fun. May get a 3D printer at some point.
 
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19Mateo83

19Mateo83

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@vandy @powers2001 SUCCESS!!! after a 24 hour soak at the bottom of a 5 gallon bucket all 6 magnets were bone dry inside. The ones with bubbles inside were where excess solvent got inside them during the welding process.
B52AE60F-5B65-40CB-82F5-CD4D2AC6C31A.jpeg
195EC70E-62BB-46F6-AC11-EACB9ECC95AD.jpeg

Cost breakdown
32 pack of coin holders - $15 on amazon ($.46/ea)
12 pack of magnets - $16 on amazon ($1.33/ea)
Cost of each encapsulated magnet - $1.79/ea, $3.58 a pair.
the price of the Weldon 3 was less than $5 for 4oz.
 
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@vandy @powers2001 SUCCESS!!! after a 24 hour soak at the bottom of a 5 gallon bucket all 6 magnets were bone dry inside. The ones with bubbles inside were where excess solvent got inside them during the welding process.
View attachment 3126282View attachment 3126284
Cost breakdown
32 pack of coin holders - $15 on amazon ($.46/ea)
12 pack of magnets - $16 on amazon ($1.33/ea)
Cost of each encapsulated magnet - $1.79/ea, $3.58 a pair.
the price of the Weldon 3 was less than $5 for 4oz.
Right on!! These turned out awesome. Definitely saving this idea for future projects
 
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