Originally produced by Games Workshop for their 6mm scale table top wargame, Epic 40,000 (and its predecessors and successors). They have since abandoned all support for Epic, so I modeled this in Autodesk Inventor for any avid wargamers. The printed model will stand just over 100mm to the top of the shoulder weapons which suits 1:300 Epic scale.
I modelled this 100% from scratch using internet photos and illustrations. For my high-detailed version of this project, visit https://www.thingiverse.com/thing:2947596
If printing in a brittle material you might have problems fitting the greaves over the shin; You can instead use the separated armour plates from the HD version with a scale factor of 18%.
Epic has been re-released as a titans-only game called Adeptus Titanicus. It is 8mm scale instead of 6mm, so I suggest that anyone wanting to print this for AT should upscale it by 133%. As GW currently sells a plastic AT Warlord, I do not condone printing this model for gaming, as if you enjoy playing GW games then they deserve to be supported for their effort. It would make a cheaper destroyed titan scenery piece/ objective marker, though!