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The neodymium magnets we use are very strong. Handling them with care is necessary to prevent personal injuries, property damages and magnet damages. Magnets can cause serious damage to fingers if caught between 2 magnets such as breaking bones or losing finger tips. Neodymium magnets are brittle; they can be broken or can splinter in a collision.
I'm just not sure what the long term effects are in a reef system. The standard two part epoxy is initially reef safe but who knows if it eventually breaks down. acrylic is 100% so long as the seams are welded properly. that's the major issue with the magnets that come with commercial frag racks like eshopps. a lot of people, myself included, have had leaks with their acrylic encapsulated magnets.
I use the epoxy coated 1" x 1/4" neodymium magnets for the Outside magnets on my frag racks. I don't think I would trust them for very long on the inside. I did buy a couple 1" x 1" 1/4" square rubber coated neodymium magnets and they do seem like they have much more coating on them, than the epoxy coated ones.
This makes no sense to me. Most (if not all) impellers are magnet driven. If there is an issue, I believe it stems from the post the magnet is attached to, not the magnet itself. It IS possible that some manufacturers use iron based material for their magnets, but the majority of what you find today are "rare earth" magnets.
- Applied Magnets - Strong Neodymium Magnet For Less www.magnet4less.com Reply. Nov 12, 2020 ...
I rather like the G12 Century Vintage. One of the only upgrades that fit into a Bassbreaker 15. Large magnets get in the way of the tubes and this has a very small magnet making thing easier. But break in your original speaker throughly before splashing out.
So i put the rubber coated ceramic in the tank and the neodymium outside the tank so it would not be in the water at all and it works great. Sorry for the long post but I hope this helps someone in the future, thanks! 1st pic is the rubber coated ceramic magnets 2nd pic is the rubber coated ceramic in the tank and the neodymium outside.
I used 1" x 3/8" neodymium magnets for the inside. I found some re-useable molds just a little bigger than the magnets. I used polyester casting resin with black dye ( to block uv rays) to coat the magnets and to attach the black eggcrate.
Super glue the tip of 8lb test fishing line to one end of the magnet, dip it. Cut the line and nip it flat. Super glue line to the opposite side of the magnet, which is now coated, and dip a second time.
If you’re looking to reduce weight (and price isn’t an option) Weber makes a neodymium magnet JBL D120 knockoff that IMO is great. I have one in my 40 watt Super build and I love it. Uncolored like the EV (compared to a Jensen or Celestion) but a fraction of the weight.