You have to print the file 2 times and then you have to put 16 5x1 magnets into the holes normally it is fine to put the magnets with a hammer in. But sometimes you have to glue it witch superglue. 

I'm sure you will make it.

If you have questions or design ideas write it either in the commends or an e-mail to: felix.nzgleisdorf@gmail.com

Have fun with it.

Lg Felix