Hi to all I reworked the 36 foot pipe load to 48 feet. I added end supports to minimize the end-sag. It is a .stl file, scalable. It is open for download. Please no commercial use per TinkerCad rules. You should dunk the print 10-15 times in alcohol to clear the residual resin- the tubes have a small diameter. A little paint, and drop it onto a flat.
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https://www.tinkercad.com/things/1tp9ni7Nt82-n-scale-pipe-load-48ft