Half round window fan louver

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Project by rcs47 posted 07-26-2011 04:55 AM 6286 views 0 times favorited 2 comments Add to Favorites Watch

We needed a new cover for our half round window. Instead of buying a fabric, plastic or wooden fan louver, I decided to use bent lamination to make a frame, molding, and a my own louver.

I used redwood for the frame, pine for the blades and molding. I used polyurethane glue in the bent lamination process. If you want more detail, I have a blog entry that describes the process of making the louver (here) .

The whole process was pretty easy. I think the hardest part was painting the thing (I’d rather stain a project).

Thanks for looking.

-- Doug - As my Dad taught me, you're not a cabinet maker until you can hide your mistakes.

2 comments so far

View whit's profile


246 posts in 4215 days

#1 posted 07-26-2011 06:17 PM

Well done. I’m looking to do something similar for a small palladian window we have in my wife’s studio. It’s over a window for which I’ll be making plantation shutters.

One question – do you think it would have helped to have tapered the slats along their length or is there enough room for a smooth fit as they are?


-- Even if to be nothing more than a bad example, everything serves a purpose. cippotus

View rcs47's profile


199 posts in 3368 days

#2 posted 07-27-2011 02:07 AM


I used 3/8” material for the slats, and ran a 1/8” round over on the corners. I took a block plane to the edge of the slat that made contact with the bottom frame.

I could have turned the slats more, but I liked the look. You could taper the edges, allowing you to close them further yet. The wooden fans I’ve seen at Costco use small slats (2 to 2-1/2” at the top), that are tight together. It just depends if you want any light through the window.

Good luck,


-- Doug - As my Dad taught me, you're not a cabinet maker until you can hide your mistakes.

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