SBD Dauntless
My son wanted a US plane to combat his A6M Zero, so I scoured the internet for a free 3D .STL file of an SBD Dauntless. I found a .3DS file on ShareCG by Neil Wilson and I modified it to make it printable. Set it up to print in parts and now my son is happy to play Battle of Midway with his Zero and Dauntless.