I am making some weapons from league of legends however i am having a problem with using circles as a dxf file which i must use for cutting on the laser cutter.
i dont really know what other info i can provide because im pretty new to this program but i only need basic tools anyway.
the link below shows the screenshots and what i want to do if someone could help me that be great otherwise i cant complete my goals.
http://postimg.org/image/b6zb82i9v/
thanks to anyone who reads this.

edit: i forgot to say after that message it will say unable to save i dont know why :c

Hello

Read the help tab that it's to the left. Perhaps there you can get more clues about what You can do.

As far as I remember:
- Uncheck "use LWPOLYLINE ... " option
and/or
- Convert your circle to path (Shift + ctrl + C)

Some time ago, (I think it was Lazur), users in this forum noted that a circle in Inkscape, because it's a bezier curve, can't be exactly a circle. But the difference it's very little. Since it's just an "art" type of use, there is no problem. However, a workaround is to use a polygon/star shape of several points (say, more than 16 correct me if I'm wrong).

If you solve your problem, don't forget to tell us

Greetings

PD, recently in Win 10 machines I've experimented some problems exporting to DXF or PLT format anyone can confirm?

That's correct, cubic Béziers radii can never be the same along a segment of the path (as they are sort of parabolic), though the difference is almost unnoticeable.
http://pomax.github.io/bezierinfo/#circles_cubic

Also take a look at the first post by suv in this topic for circles in dxf files (bug!):
viewtopic.php?f=29&t=19782#p75354

Well, I find it interesting that exporting circles (Shapes) to DXF ever worked at all, since it's a shape, and not a path. But it should be a simple matter to convert to path. Path menu > Object to Path

I think I heard that the dxf format actually supports circles, and they are preferred, because they are more exact.
Only Inkscape forgets to convert its SVG circles to dxf circles currently :/