Vectric Aspire makes a mess of a circle?

[Davek0974]

Been learning Aspire for some CAM work, it seems to have a bug with simple circles where it generates G-Code with hundreds of straight lines?

Here is a simple test file - it contains two paths, first is a square with 10mm radiused corners which works perfectly. The second is a simple circle and as you can see it has used loads of straight lines this time.

Profile 2.tap.zip

Can this be fixed at all, I am using the post for Mach3 with Arcs and ATC.

Thanks

[Clive S]

Dave can you post the Aspire file up?

I have just drawn a simple circle in Aspire and put it through the MAch3 post without any problems.

Have you done the cad in Aspire or imported from another cad package there is a command to close vectors with a smooth curve

[Neale]

Daft question, maybe, but did you draw the circle in Aspire or import a dxf from elsewhere? I had similar problems a little while ago because I had saved the dxf in the wrong version so it ended up as a series of line segments rather than arcs.

[Davek0974]

Hi

the file was just a quick mess about for testing the motion on my mill conversion project.

It was all done inside Aspire.

File attached

Test junk.zip

[Davek0974]

I just made a similar file in my CAD app and converted it in Aspire and its just as bad, converted in SheetCam and its perfect - about 15 lines of code :)

Seems to be an aspire bug?

[Clive S]

I just made a similar file in my CAD app and converted it in Aspire and its just as bad, converted in SheetCam and its perfect - about 15 lines of code :)

Seems to be an aspire bug?

Dave when I draw a circle in my Aspire it is fine when I did another circle on your drawing it is also fine. Did you draw the circle in Aspire
The post I am using is Mach2_3_Arcs_mm.pp

[Davek0974]

Yes i drew it in aspire, same post here although i tweaked it a little to suit my machine but only in the end code i think.

Aspire does the same thing when i import a circle from my CAD app.

[magicniner]

I'm not familiar with Aspire but most CAM applications have an option for lines or arcs as some old controllers don't support arcs.
If you select a "lines, not arcs" output option in CAM the results are as described,

- Nick

[Clive S]

Yes i drew it in aspire, same post here although i tweaked it a little to suit my machine but only in the end code i think.

Aspire does the same thing when i import a circle from my CAD app.

On reading further. I have read that if you stretch a circle in Aspire it changes to segmented lines.

[Ger21]

You must have modified the circle in some way.

If I export g-code for your circle, it uses G1 segment.
If I draw a new circle over the top of your, and export g-code, I get G2/G3 moves.