Nick speaking,

In this tutorial I show you how to magnetise Necron Lychguard/Praetorians with all four weapon options from a single kit. It's a pretty long tutorial, but then there is a lot of magnetising to do!

These are the magnets I use in this tutorial (UK Supplier)
1x1mm N52: https://goo.gl/R9Tkyc
2x1mm N52: https://goo.gl/UvKHSs