Aquarium Magnetic Scraper

I designed this tool because the traditional scrapers for aquarium are very soft and dosen´t take out the seaweed from the glasses. Also you can use the standart cutting edge and there isn´t any bolt and screws only the magnetics.
In this way I used neodymium magnets with diameter 8mm and high 5mm, if you use anther size of magnetics you have cad file for future changes.