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  1. #1

    Default Crown Molding on Bull Nose corners

    Can anyone tell me what the cuts are for a corner that is bull nose?

  2. #2
    Join Date
    Aug 2007
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    7,096

    Default Re: Crown Molding on Bull Nose corners

    Depends on how "round" you want to make the corner and how good you are at making those cuts. You can cut the corner square - inside corners would be trimmed to fit the cove, outside corners are a typical 45* cut on each leg, the gap is then caulked. You can 45 the corner, the 45* piece will go across the inside/outside corner. You can buy special cove moulding pieces for the corners. Or you can "horse-tooth" the trim, making as many segment cuts as you like to go around the arc of the curve.

    As for the angle of the cut, again that depends on the number of joints within the corner. Basically, take the degree of the angle of the corner - say 90*, and divide it by the number of joints times two, to make the change of direction
    Examples:
    90* with two pieces of trim = 90*/(1 joint x 2) = 45*
    90* with three pieces of trim = 90*/(2 joints x 2) = 22.5*
    And to save yourself some serious headaches and hassles, cut yourself some sample blocks of trim with the cuts you need to make for both inside and outside cuts and mark them accordingly. This way, there's no brain bending to figure out what angle to set the saw or how to lay the material into the saw for the proper cut, all you do is match the sample block to what you're trying to cut and set the saw to that.
    I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!

  3. #3

    Default Re: Crown Molding on Bull Nose corners

    Thank you very much. I will try this out.

  4. #4
    Join Date
    Dec 2009
    Location
    Winona, MN
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    35

    Default Re: Crown Molding on Bull Nose corners

    Quote Originally Posted by silvershadow View Post
    Can anyone tell me what the cuts are for a corner that is bull nose?
    This is a slideshow of the method I use for crown on bullnose corners:

    http://s436.photobucket.com/albums/q...view=slideshow

    Cheers,

    Basswood

  5. #5
    Join Date
    Dec 2009
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    Winona, MN
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    Default Re: Crown Molding on Bull Nose corners

    Quote Originally Posted by jkirk View Post
    believe what basswood posts, he's a contributer to finehomebuilding magazine. this guy knows his stuff. makes normy look like an apprentice

    hey bass, this is woodworkbykirk
    Hey Kirk,

    Here you're a senior member and I'm the newbie...

    ...say what's with all the Spam posts here?

    Weird.

    All the best,

    Basswood

  6. #6
    Join Date
    Jun 2007
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    Posts
    5,808

    Default Re: Crown Molding on Bull Nose corners

    Basswood,
    How do you prevent separation with wood expansion and contraction?
    Jack
    Be sure you live your life, because you are a long time dead.-Scottish Proverb

  7. #7
    Join Date
    Dec 2009
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    Winona, MN
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    35

    Default Re: Crown Molding on Bull Nose corners

    Quote Originally Posted by JLMCDANIEL View Post
    Basswood,
    How do you prevent separation with wood expansion and contraction?
    Jack
    I used the dowels like rebar and a double layer of expanded metal lath stapled to the crown and dowels. Interestingly the wood to plaster joints in that home proved more stable than wood to wood joints.

    Here is the article:

    http://www.finehomebuilding.com/how-...n-plaster.aspx

  8. #8
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    Jun 2007
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    Default Re: Crown Molding on Bull Nose corners

    It certainly was a beautiful job.
    Jack
    Be sure you live your life, because you are a long time dead.-Scottish Proverb

  9. #9
    Join Date
    Sep 2009
    Location
    florida
    Posts
    598

    Default Re: Crown Molding on Bull Nose corners

    Ditto what Spruce posted,,,the cuts should be 22.5..Cut the pcs and use them for a template.......
    Basswood thats pretty slick, yrs ago I seen a plaster guy do the same thing in a church, He had to do some repairs to the existing plaster crown. I think he made the trowel out of some sheet metal........Nice job

    Anyone looking for a great angle/miter protractor look at the
    Miter Master Plus. I'm the inventor of the product
    ( this is not spam in any way) the other dude is the spammer. When I invented the MMP I had the pro and DIYER in mind, it's the easiest miter tool I have ever used especially for crown molding....Check it out on your own. The product is Licensed out to QMS,and no Im not an employee of theres........

    http://www.amazon.com/QUINT-GRAPHICS...1302837&sr=8-1

    http://www.constructionforums******....php?f=16&t=122

    http://www.josephfusco.org/
    Gizmo

    Cut it 3 times & it's still to short.
    Inventor of the Miter Master Plus.

    Hidden Content
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  10. #10
    Join Date
    Dec 2009
    Location
    Winona, MN
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    Default Re: Crown Molding on Bull Nose corners

    Quote Originally Posted by JLMCDANIEL View Post
    It certainly was a beautiful job.
    Jack
    Thank you, Sir.

    It was a fun project.

    Regards,

    Basswood

    http://basswoodcarpentry.com/

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