Bridge Beams
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I make "erector set" style kits. Kids can build working models of bridges and cranes.
03/03/2023
Here is the second video in a series about hammerhead cranes.
for more info go to :
www.hammerheadcranes.com or portlandjib.com
crane cranes jib tower cranes moment
02/17/2023
Here's Mateo with a through truss.
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