... with keeping for 24 hours, but it is not impossible. I do know that injection moulded parts shrink after injection, and continue to shrink for days or weeks afterwards, unless moulded at very high pressures. These chairs were moulded at zero pressure, so it's quite likely that they would shrink and change quite a lot with time. Close-up photography can be so cruel to models, so I thought I would set up something more akin to normal layout viewing distance and photos. This is 7mm/ft scale: 2_172227_190000000.jpg I changed to grey-scale to hide the coloured sleepers. The track in the background is ordinary Peco 0 gauge flexible. It seems to me that when painted and ballasted, the 3D printed version would not be too obviously inferior. This is the same test piece as before, I haven't done anything to it. Even in what would be regarded as a close-up shot, it doesn't look too bad: 2_172235_490000000.jpg So today I'm feeling more hopeful. This is of course 7mm, and many will be looking ...