This is a remix of a 15mm (1:100) model by either m_bergman or TigerAce1945 (not sure which; I have all their files mixed together on my hard drive).
I've added the gunner, replaced the guns with chunkier ones to print a bit more reliably, and I've added track pins to reduce the flatness of the track edges. I've also split the turret and turret peg into two pieces to print the cleanest bottom edges possible, and added holes to take 3mm magnets.
I print both pieces with just a skirt, and I print them separately. I use Cura's zig-zag supports on the turret, and tree supports on the hull. The hull is printed sitting up on its tail to minimise print layer lines on the vehicle's sloping panels.