How to Magnetise the new GW Baal Predator kit

Hi there,
Second attempt at posting this. The first one was on my old camcorder and the quality was shocking so hopefully this will be better. Its a walkthrough of the way I have magnetised the new GW Blood Angels Baal Predator kit so it can be used as both a Flamestorm Cannon and twin linked assault cannons. I had to make a couple of heavy handed cuts to get it inside YouTube's 10 minute cutoff so apologies for that.

Hope some of you find it helpful,

Cheers