How do I radius a flat surface?

Colin
Colin
in 3D Modeling

I've spent a few hours trying to radius the top of the solid on the left. It's flat and I need to put a 9.5" radius on it so it looks like the one on the right. Any help would be much appreciated.

image.png

Comments

  • Sakko
    Sakko

    Hi Colin,
    You can't convert the flat face of a solid into a cylindrical surface face having Radius = 9.5" in one operation !
    In your words "to put a 9.5" radius on the top face" of a solid…
    You will have to draw the 2D Section Profile of the solid and extrude it to a solid or to add a new solid and union it with the existing one.
    I take the second approach producing a 2nd solid and union the 2 solids.
    First draw 2 circles with R = 9.5"(24,13 cm) in order to find the center of the the arc needed to construct the new solid on top of the old one:

    image.png

    You can now produce a closed polyline, the yellow one and extrude it to a solid.
    Then union the 2 solids.
    You find attached my test file to reproduce the steps.
    I hope this helps…

    image.png
    RadiusOnSolid.dwg



  • Colin
    Colin
    edited April 7

    Hi Sakko,

    This is good to know now, as I have quite a few more radiuses to add (it’s a guitar neck).

    Based on your answer, and my several hours at attempts, I’m better off to start again and make the various radius components as individual solids and then union them.

    Thank you very much for taking the time to help me.

  • Its_Alive
    Its_Alive

    Jacksons are compound radius, 12"-16" :)

  • norb1@bigpond.com
    norb1@bigpond.com
    Hi Colin
    You might be better off constructing this neck as if you were building it for real as in fretboard and neck as separate items.
    Lofting the fret board from two end profiles since guitar necks are tapered from narrow at the nut and wider at the body end. You can get the radius as described by Sakko.
    The neck can be derived from the bottom of the fret board which will match the taper.
    I assume this is a fender style solid body neck from your example so yo won't have to worry about the heel which is another complication.
    I recommend that you research the net for scale lengths and fret positioning etc.
    Hope this helps.

    Regards
    Norbert