This is based off the excellent mech by NathansMind.
I rescaled it for 15mm play and broke it into pieces to make printing easier at such a small size. It's about the size of a "dreadnought".
I typically print it all in one print with all the pieces laid out as they are with support. Then I clean off the support and assemble it with super glue.
I have also made some great "bits bots" using the legs from this model and the torso/weapons from what ever spare parts I have laying around in my bits box.
An all around great model!
Note: example.stl is not intended to be printed. It is just for reference.