DXF units + scale

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jlavery
Posts: 3
Joined: 05 Feb 2011, 02:37

DXF units + scale

Post by jlavery » 05 Feb 2011, 10:56

Hi all,
Further to my previous post regarding using DXFExport.NET to create a DXF file using a Graphics object...

Our application currently prints a pattern which is used to cut out cloth.

The application now needs to export to a DXF so that a laser cutter can use the file to cut to a real-world size.

Currently my drawing methods nominally assume 1 unit = 1mm (i.e. the location (10,10) is 10mm from the origin in the X andy Y directions), then when we're printing our image (in the existing system) we use the printer's DPI to scale the image appropriately so that it prints the right size.

How do I achieve the same result when creating a DXF file?

I'm probably missing something basic about DXF!

Thanks,

James

support
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Joined: 30 Mar 2005, 11:36
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Re: DXF units + scale

Post by support » 08 Feb 2011, 18:05

Hello James.
There is a point of DXF specification - DXF files are unitless. A file doesn't contain information about DXF unit real value. The scale must be chosen by software that will handle DXF file or set with laser cutter machine.
Unfortunately I have a very limited knowledge in laser cutting. Are these machines support DXF format import or DXF importer necessary?

Alexander.
Technical Support E-mail: support@cadsofttools.com
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