fusion takes a long time to load a DXF file, or just stalls and has to be restarted

[contact]

I've been learning fusion and trying to use it for our CNC Mill.  Today I've been trying to get gcode for 8 different files for 2D cuts on 4'x8' sheets.

I keep trying to import the DXFs one at a time and Fusion just stalls or crashes on most of them.

Here's one of the files.

I've been waiting for over 20 mins just to load it.  For the 4th time... after 3 crashes (or just no response).

I've separated shapes to different layers.

These aren't complicated shapes and all they need is the toolpath for cutting, but the amount it takes just to insert is ridiculous...

Any help?

[HughesTooling]

Your file didn't attach, you need to ZIP DXF files or the forum blocks them.

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@contact wrote:

These aren't complicated shapes and all they need is the toolpath for cutting, but the amount it takes just to insert is ridiculous...

Any help?

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We hear this all the time and 99 times out of 100 the simple file has several thousand lines in it and Fusion is just not the right tool for files like this. Could be wrong, wait to see your sample file.

Mark

[contact]

ah... here is the zip

[contact]

here's the zip

[g-andresen]

Hi,

I have opened the DXF in V-Carve, brought all layers to a single one, open vectors closed and converted to Bezier (tolerance = 0.05mm)
Then the import in Fusion works better.

günther

[contact]

Your file is in mm, the original was in inches.  

I think that the size might be what makes it freeze. 

[g-andresen]

Hi,

I do not think so.
The original file contained several layers as well as an excessive number of control points, which were probably responsible for the problems.
After editing in V- Carve the file was reduced from 2083 to 411 kB.

günther

[jeff_strater]

Just FYI - I let this run.  It did complete, but took over an hour to do so.  There are over 22,000 entities in this DXF.  A "large" sketch in Fusion is 500 entities or so.  The problem is the sheer number of very tiny curves involved.  We see lots of these types of DXFs or SVGs, often from Illustrator.  The Fusion sketch solver will just choke on this many curves.  The modifications that @g-andresen made in V-Carve are good.  But, these curves are simple enough that, if it were me, I would import this as a canvas, and just re-trace the curves using native Fusion splines.  I could probably re-do this in 20 minutes using maybe 100 curves or so, which would perform much better...