Railroad track construction machine.
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Previously:
https://www.homemadetools.net/forum/...917#post119761
https://www.homemadetools.net/forum/...504#post132062
https://www.homemadetools.net/forum/...958#post124998
https://www.homemadetools.net/forum/...047#post125523
https://www.homemadetools.net/forum/...121#post115609
https://www.homemadetools.net/forum/...144#post120921
https://www.homemadetools.net/forum/...1502#post74535
