Board outline gerber showing drill holes

[mw60025]

In Ultiboard 8.3.19, I created a small file consisting of a rectangle board  outline and one part from the database that has two pads and the associated holes.  When I export the gerber file for the board outline, I get not just the board outline, but the drill or pads for the part included in the board outline.  I looked in the Ultiboard options and properties and cannot find any choices that would cause this.

I created the above example since I had modified an existing board layout of an actual product of ours and had the same result - extra stuff included in the board outline gerber. If I open the gerber outline file of the board before modification, it shows just the outline.  I think I see some additional stuff included in the solder mask bottom layer as well.

I need to know what causes this to occur and what the workaround is.  Example files attached.  

Bill

[stressed_user]

Bill,

I''ve checked your gerbers, and have seen that the two holes are some 2.5 mm (100 mills) in diameter.

Is that the correct hole size?

The problem could be in your component, edit your component and check what type of pads you find.

Als check if the hole is not having a mechanical hole in the board outline...

Usually this can be seen when there's a cross through the circle...

good luck!

[Tien_P]

Hi Bill,

In the Design Toolbox, select the Layers tab and uncheck all layers except for the Board Outline layer.  Ultiboard will display all objects on the board outline layer and I suspect you will see two circles.  If you don't see the circles, please post your file and I will investigate this issue.  If don't want to post your file on a public forum, you can upload to your file to ftp.ni.com\incoming, only people inside the NI network have access to this location.  Once you post the file, let me know and indicate the file name.

[mw60025]

Tien,

I had posted the files with my original post yesterday on this forum.  If you open the project file (.ewprj) and check only the board outline layer in the Design Toolbox, you see just the board outline. If you open the gerber file, you will see that in addition to the board outline, the two holes for the single placed component are also there.   So, something is not working properly when the file is converted to Gerber format.

In this forum the same topic came up in a 2007 post, but was never answered:

I am having a problem with Ulitiboard 8. After exporting gerbers, the board outline gerber shows all drilled holes (except for the vias) as well as the usual outline. Previous versions only exported the board outline as expected. Is this a bug, or have I missed a control option somewhere? Thanks

Board outline gerber showing drill holes

Options

06-14-2007 06:53 AM

[mw60025]

Tien,

In looking on my previous post, I see that only the gerber file made it to the post.  I'm attaching the matching ewprj file to this post.

Bill 

[Tien_P]

Hi Bill,

Download this file: ftp://ftp.ni.com/outgoing/8_3_36.zip

This looks like a defect that was fixed in 8.3.36.  In the zip file,  you will find a Pro and Power Pro folder, install the file for the version you are using.  If you are not sure which one you are running, in Ultiboard select Help>>About Ultiboard.

[mw60025]

That fixed it.

Thanks again, Tien

Bll