Magnetic Curtain Rod Holder

We have a steel door where we put a curtain on with magnetic curtain rod holders. One of them broke so I took the magnet out of the broken piece and got my calipers out and did some measuring to come up with my own version which when completed holds the magnet I took out of the broken one and used 3m double stick tape to secure the magnet in the new holder. I painted the new one to kind of match the old one and it all worked out well. One could find their own magnet and print a set and have t