Which Magnets?

Mebeknob · Jul 27, 2016

This is what I'm working with. I got two magnets. Cut a rock in half. Epoxied one to the back of the Rock and let the other one stay normal.

So I'll just pull it out and epoxy it and hope it works lol.

cromag27 · Jul 28, 2016

Epoxy gets brittle and can crack and chip. but it could worth a shot. do ya feel lucky?

danknuc · Jul 28, 2016

Roberto CRC said:
Ok i understand. You could send me a pics of your fraq rack? How many inches are long?

This one is 3" wide along the glass and 5.5" out into the tank. This one I am going to have in my sump that has 1/4" glass. That is a 15oz can of potatos sitting on the rack.

This one is 3" by 3" and will be used in my tank with 3/8" glass. To be able to put more on it I will have to put stronger magnets on it, like two sets of the round black magnets in the first picture.

atoll · Jul 29, 2016

I use plastic clear coin cases from eBay to house magnets. Pop in the magnet and glue each side together, job done.

Mebeknob · Jul 29, 2016

cromag08 said:
Epoxy gets brittle and can crack and chip. but it could worth a shot. do ya feel lucky?

Lucky enough for now. Since I won't be moving it much and upgrading within a year, I'm not too worried

Gotasplinter · Aug 6, 2016

what did you end up going with? any finished product pics?

Gotasplinter · Aug 6, 2016

Ha just saw the second page

cracker · Aug 6, 2016

I like the bend in the egg crate,pretty cool.

danknuc · Aug 7, 2016

cracker said:
I like the bend in the egg crate,pretty cool.

It is really very easy. Just cut the size out you want from your full or partial sheet then use a propane torch on the lowest setting possible and wave it over the area you want to make the bend, just a couple seconds. Then you just bend it over with your hand and hold it in position for a little bit, maybe 20-30 seconds, while blowing on it. Then just let it cool to room temperature.

spllbnd2 · Aug 7, 2016

Neo magnets are coated not only with nickle but a combination of ni(nickle),cu(cooper),ni(nickle). Best practice that I have found is to encapsulate the magnets in acrylic. This lasts a long time and when done properly will not allow the magnet to ever get wet and is very strong.

I would not trust a coin holder glued together to last very long before you see the magnets start to rust. I remember the old Hydor Koralias had an issue with their magnets starting to rust due to the way they manufactured them. But they have since done better with those.

I will post a picture of how I encapsulate my magnets later once I get back home.

Cheers,
Alex

danknuc · Aug 7, 2016

Working on my first attempt at a shelf rock out of a chunk of BRS Pukani. Used 4 white 22.5 lbs strength plastic coated magnets on the rock, 1/2 x 1/2 x 1/2 square from Apex Magnets. You can see one of them at the edge of the rock. I will cover the magnet with epoxy before I am finished. Holds up nicely on the 3/8" glass with round 26lb magnets outside the tank.

Salty1962 · Feb 1, 2017

spllbnd2 said:
Neo magnets are coated not only with nickle but a combination of ni(nickle),cu(cooper),ni(nickle). Best practice that I have found is to encapsulate the magnets in acrylic. This lasts a long time and when done properly will not allow the magnet to ever get wet and is very strong.

I would not trust a coin holder glued together to last very long before you see the magnets start to rust. I remember the old Hydor Koralias had an issue with their magnets starting to rust due to the way they manufactured them. But they have since done better with those.

I will post a picture of how I encapsulate my magnets later once I get back home.

Cheers,
Alex

Alex,
Did you ever post pics and methods for encapsulated your magnets? Trying a DYI project and need to water proof my magnets.
Thx