It seemed like a good idea to have a couple of Grey Knight Terminators with thunderhammers and
storm shields to go either with the brother-captain as a body-guard or with the close combat inquisitor.
The thunderhammer being powerful enough to even force a landraider to a stop.
I wanted to use the Grey Knight models with their engraved shoulderpad on one side and the Grey Knight
symbol on the other side. Just sticking on the thunderhammer of a normal Space Marine Terminator would not
do.
I started with a complete Grey Knight Terminator model. The conversion consists of two different jobs.
First job is to exchange the sword or the halberd with a hammer. And the second job is to get rid of the
stormbolter. (The storm shield can be glued on the stombolter but that somehow does not feel right. So
the stormbolter goes!)

The first thing to do is to remove the hammer from the 'normal' fist. I sawed of the handles on both sides
of the hand. That was easy. The powercables ar a complete different story. With a hobby knive I tried to
cut of the cables on a previous model. Which became a complete disaster. Leaving two ways open for me. Cut
the fist away from the cable or as I did remodel the cables with Green Stuff later.
Now clip the halberd or the sword from the Grey Knight right arm. Make sure to leave a piece on both sides
of the hand. Create a flat surface with a knive or a file.
In the next step I drilled a hole in the hand with a pin vice. The hole is made wider with a larger drill.
Drill smaller holes in both parts of the handle of the hammer. Superglue is used to attach small metal pins
to the handle parts