Uploaded July 2024 | Updated September 2026, 2 weeks ago

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Let's quickly look at using a small (4-40) threading die to thread truss rods on our miniature railroad bridge. Threading rods is simple, but you must follow a few basic rules.
Threading brass rods in small sizes is a useful skill when building miniature trains and structures. But also a useful skill for hundreds of other projects!

#modelrailroad #gardenrailroad #modelrailwaylayout