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# Re: Problem with my very first design

- To: femm@yahoogroups.com
- Subject: Re: Problem with my very first design
- From: "tano1938" <rgarritano@comcast.net>
- Date: Thu, 17 Apr 2003 15:52:08 -0000
- In-reply-to: <3E9DCEAE.7010801@ieee.org>
- User-agent: eGroups-EW/0.82

    I changed the tolerance and it got rid of the most of the problems
    but I noticed that if the dxf file has a line with three points
    defining it, i.e. two lines in series, the mesh program hangs up and
    the program must be shut down in the windows task manager. Editing
    the file by replacing the two lines in series to one line cures the
    problem.

    Thanks for the help.

    Ron

    --- In femm@yahoogroups.com, David Meeker <dmeeker@i...> wrote:
    > tano1938 wrote:
    >
    > > Well, I finally got my first design input into femm (thanks to a
    lot
    > > of help from Dave) and when I try to run the solver, I get the
    > > message that "material properties have not been defined for all
    > > regions." I tried many changes but I always get the same message.
    The
    > > downloaded file is "FRT_OLD.fem." It is the magnetics for a simple
    > > voice coil motor. Can someone please help.
    > >
    > > Thanks
    > >
    > This could be a "bad DXF" import example--there are a bunch of
    nearly
    > coincident points in the geometry that make sliver-thin regions
    with no
    > material definition. The "easy" cure is to specify a bigger number
    for
    > the tolerance in the DXF import, so that these nearly coincident
    points
    > stand a better chance of getting consolidated. Anyhow, I put a
    modified
    > version that I manually checked (run triangle and look for regions
    with
    > a super-fine mesh to identify problem areas) at:
    > http://groups.yahoo.com/group/femm/files/frt_mod.fem
    >
    > Dave.
    > --
    > David Meeker
    > email: dmeeker@i...
    > www: http://femm.berlios.de/dmeeker

- References:
  - Re: [femm] Problem with my very first design
    - From: David Meeker <dmeeker@ieee.org>

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