Magnetic Aquarium glass cleaner

Designed to use Neodymium Magnets 2" x 1" x 3/4"
works great for 3/8" glass also up to about 1/2"
use the soft side of Velcro on the outside glass part and the hook part on the inside to clean the algae

Print 80% fill 3 shells
ABS
Then an ABS slurry to glue the 2 parts together

doesn't float, but works way better then what you can get at the store. Be careful as the magnetic are extremely powerful and you could loose a finger.

http://www.ebay.com/sch/i.html?_from=R40&_trksi