45 degree basement soffit / triangular soffit

PNOTY96

Hi. Finishing my basement. all drywall is up and finished...NOW I have to build soffits to conceal ductwork. The ductwork is round flexible insulated tubing, and I am considering doing soffits at a 45 degree angle from wall to ceiling to concel them, instead of the standard "box" or "cube".

Any advise on how to construct? I know how to do the Box / cube type, but wondering do I just Mitre the 2x4's or 2x2's to a 45 degree angle on each end, then bolt to existing studs? Will I not need a typical "base" 2x4 running the length nearest the floor? Also, should I just nail or screw the ends of the mitred 2x4.s directly into the wall studs? it seems the hole going through the mitred ends may split the wood. Finall, would I want to do this with the short width of the 2x4 against the wall studs / celing studs or the "long" width ??

oldfrt

Maybe you could consider using metal studs,as they would be lighter and don't really require a huge tool selection.
The tracks can be bent to the angle you'll need and the studs cut at your angle and ran flat.
Just screw them into the studs,no splitting.

PNOTY96

Thanks..will look into that. I imagine there is a tool to bend, and can use table saw with special blade to cut?

baum

Tin snips to cut, and a table to bend it on.