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The Magic Miter

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Uploaded by on Jul 22, 2008

How to cut crown molding on the flat using a small sliding chop saw and a math formula.

  • likes, 3 dislikes

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Uploader Comments (donnydoors)

  • A question in the set builders test is: "How do you cut crown molding?" Answer: upside down and backwards. One can always flip the molding and set the saw to the opposite 45 degree angle, then cut as deeply as possible. Having done that, lay the molding flat on the saw table and try and match the bevel and miter of the partial cut. Mess up a few boards doing that and you're in.

  • I fell asleep watching this.

  • @danny223009

    Hopefully not while you were runnning the chop saw.

  • Well, you're right about the .625. My mistake. But somehow, the mitire worked out close enough.

    Regarding the calculations, I redid my math on the same old Sharp calculator I used in the video, and the figures came out the same.

  • Efficient finish carpentry is not the point of the video. It's a study in applied math.

    So how do YOU quickly cut your over-sized crown molding? Super-size saw? Butt cut and cope? Are you willing to share your expertize?

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All Comments (43)

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  • There's only to tipes of crown molding 38 and 45 degree. No time for to much bull shit

  • Holly cow brother, I would rather mess up few boards rather than doing what your doing.

  • I would have just bought a bigger saw

  • Thank you very much Sir, you're the only one who was able to explained it scientifically. I hope you will teach us more for acute, obtuse and reflex angles that Crown molders might encounter in the future. I am familiar with the tables but still don't know the math involved, but thanks to you - now I know a lot more about Crown moldings scientifically. More power to you and God bless!

  • Excellent. I wish my maths teacher was as clear as you.

  • what if your wall isn't square?

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