I did exactly what you are thinking here; pictures around post 73/74:
I cut the c-beam down on a chop saw with a metal-cutting blade and then retapped like you indicated. I made my just a tad under 200mm long.
I did exactly what you are thinking here; pictures around post 73/74:
I cut the c-beam down on a chop saw with a metal-cutting blade and then retapped like you indicated. I made my just a tad under 200mm long.