An update of my progress.
Primed the arms white.
Bleached bone and boltgun metal is painted over.
I have 03 AoBR Dreadnoughts. I twist the arms off and drilled a hole on each side.
Did the same with the arm. After which I pushed rare earth magnets into the holes.
I realized that the forgeworld arms socket was too large for magnets to be hold firmly so I used green stuff to fill it. Than I will drill holes and push/glue the magnets in.
Thus my Dreadnoughts will soon be ready after I finish washing them using paint washes etc.