Homemade small gantry crane. By Wheels & steel.
15:32 video:
https://www.youtube.com/watch?v=jG27dW6XEi0
3:20 video:
https://www.youtube.com/watch?v=FErbjmOI9D8
6:39 video:
https://www.youtube.com/watch?v=t5XqUKurkcE
0:41 video:
https://www.youtube.com/watch?v=5Go1OHwmPX0
