>>326699I just want to go to sleep now but since you're asking and I don't have any camera yet to take pics of it, i will tell you briefly anyway...
The base of the sword was a sheet of aluminium, taken from a desktop computer's excess parts. Since there was a hole under Grimlock's Dino mode's feet, I think I would apply the same method used in Voyager Grimlock (the sword clips in either hand via tab). Refer to the tutorial included - made in MS Paint!
NEXT PROJECT:
Fire breath of Grimlock's Dino mode
Flaming Collars (as seen in episode "Black Friday")