... while sitting the body in the hot water and then letting the body cool. Problem is the materials used seem to be variable, water that is too hot seems to eat away at the plastic, too cold and the body resumes it's concave shape. Rob posted: 21 Feb 2019 23:59 from: Nigel Brown This Cambrian Railways 15T coal wagon was constructed from a 3D printed body from Coast Line Models, who obligingly reduced his 4mm one to 3mm for me, along with buffers and springs/ axle-boxes. 528_211857_220000000.jpg When it arrived it there was a noticeable bow to the sides. Came back to it 3 weeks later and the sides were straight. The sides are sufficiently thin that I wouldn't have been surprised if they had remained warped. Nigel posted: 22 Feb 2019 00:21 from: Rob Manchester Nigel Brown wrote: This Cambrian Railways 15T coal wagon was constructed from a 3D printed body from Coast Line Models, who obligingly reduced his 4mm one to 3mm for me, along with buffers and springs/ axle-boxes. ...