I used Fractalnoise's "Epic Space Marine Staue" (https://www.thingiverse.com/thing:619959).
Since I play Space Wolves I can't stand Beardless Astartees, so I used bendansie's wonderfull "Bearded Yell" (https://www.thingiverse.com/thing:1376314) to borrow the Hair and Beard.
The figure is sized ~5 cm since I will putt it on jpacek's "Gargoyle Fountain for 28mm RPG Games" (https://www.thingiverse.com/thing:2144984) which shall be filled with artificial water.
Keep in Mind, that the original "Honor of the Imperium" Staue, if you wanna use it by it self, without a fountain, is 6" / ~15 cm.
Thank you Fractalnoise, bendansie's and jpacek for your beautifull work.
The Raft might be usefull to help the supports stick to the bed. If you have no problems with Bed Adhesion (at all) you can cut the raft.