Dxf import error

[tloudev (Ondrej Pachner)]

hi there, have some DXF import issue again.
I tried to import the cutting file from https://www.instructables.com/Laser-Cut-Firemans-Phone-Stand/ (https://content.instructables.com/ORIG/F6M/092I/I27GRXGF/F6M092II27GRXGF.dxf) and this is the result:

It really doesn’t look as it should.

[tloudev (Ondrej Pachner)]

Using 0.9.19 Linux version. Maybe some dxf library linked to LightBurn binary?
this is the list of libraries “out of LB tree”:

tloudev@stodolar /usr/local $ ldd LightBurn/LightBurn |grep -v local
	linux-vdso.so.1 (0x00007ffc68fc9000)
	libssl3.so => /usr/lib/x86_64-linux-gnu/libssl3.so (0x00007ffb87644000)
	libnss3.so => /usr/lib/x86_64-linux-gnu/libnss3.so (0x00007ffb87300000)
	libnspr4.so => /usr/lib/x86_64-linux-gnu/libnspr4.so (0x00007ffb870c3000)
	libusb-1.0.so.0 => /lib/x86_64-linux-gnu/libusb-1.0.so.0 (0x00007ffb86eab000)
	libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007ffb8480a000)
	libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007ffb84481000)
	libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007ffb840e3000)
	libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007ffb83ecb000)
	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007ffb83ada000)
	libnssutil3.so => /usr/lib/x86_64-linux-gnu/libnssutil3.so (0x00007ffb838ab000)
	libplc4.so => /usr/lib/x86_64-linux-gnu/libplc4.so (0x00007ffb836a6000)
	libplds4.so => /usr/lib/x86_64-linux-gnu/libplds4.so (0x00007ffb834a2000)
	libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007ffb8329e000)
	librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007ffb83096000)
	libudev.so.1 => /lib/x86_64-linux-gnu/libudev.so.1 (0x00007ffb82e78000)
	libpulse-mainloop-glib.so.0 => /usr/lib/x86_64-linux-gnu/libpulse-mainloop-glib.so.0 (0x00007ffb82c73000)
	libpulse.so.0 => /usr/lib/x86_64-linux-gnu/libpulse.so.0 (0x00007ffb82a23000)
	libglib-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007ffb8270c000)
	libGL.so.1 => /usr/lib/x86_64-linux-gnu/libGL.so.1 (0x00007ffb82229000)
	libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007ffb8200c000)
	libgthread-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgthread-2.0.so.0 (0x00007ffb7fbd6000)
	/lib64/ld-linux-x86-64.so.2 (0x00007ffb87895000)
	libpulsecommon-11.1.so => /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so (0x00007ffb7f958000)
	libdbus-1.so.3 => /lib/x86_64-linux-gnu/libdbus-1.so.3 (0x00007ffb7f70b000)
	libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007ffb7f499000)
	libGLX.so.0 => /usr/lib/x86_64-linux-gnu/libGLX.so.0 (0x00007ffb7f268000)
	libGLdispatch.so.0 => /usr/lib/x86_64-linux-gnu/libGLdispatch.so.0 (0x00007ffb7efb2000)
	libxcb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb.so.1 (0x00007ffb7ed8a000)
	libsystemd.so.0 => /lib/x86_64-linux-gnu/libsystemd.so.0 (0x00007ffb7eb06000)
	libwrap.so.0 => /lib/x86_64-linux-gnu/libwrap.so.0 (0x00007ffb7e8fc000)
	libsndfile.so.1 => /usr/lib/x86_64-linux-gnu/libsndfile.so.1 (0x00007ffb7e683000)
	libasyncns.so.0 => /usr/lib/x86_64-linux-gnu/libasyncns.so.0 (0x00007ffb7e47d000)
	libX11.so.6 => /usr/lib/x86_64-linux-gnu/libX11.so.6 (0x00007ffb7e145000)
	libXau.so.6 => /usr/lib/x86_64-linux-gnu/libXau.so.6 (0x00007ffb7df41000)
	libXdmcp.so.6 => /usr/lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007ffb7dd3b000)
	liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007ffb7db15000)
	liblz4.so.1 => /usr/lib/x86_64-linux-gnu/liblz4.so.1 (0x00007ffb7d8f9000)
	libgcrypt.so.20 => /lib/x86_64-linux-gnu/libgcrypt.so.20 (0x00007ffb7d5dd000)
	libnsl.so.1 => /lib/x86_64-linux-gnu/libnsl.so.1 (0x00007ffb7d3c3000)
	libFLAC.so.8 => /usr/lib/x86_64-linux-gnu/libFLAC.so.8 (0x00007ffb7d14c000)
	libogg.so.0 => /usr/lib/x86_64-linux-gnu/libogg.so.0 (0x00007ffb7cf43000)
	libvorbis.so.0 => /usr/lib/x86_64-linux-gnu/libvorbis.so.0 (0x00007ffb7cd18000)
	libvorbisenc.so.2 => /usr/lib/x86_64-linux-gnu/libvorbisenc.so.2 (0x00007ffb7ca6f000)
	libresolv.so.2 => /lib/x86_64-linux-gnu/libresolv.so.2 (0x00007ffb7c855000)
	libbsd.so.0 => /lib/x86_64-linux-gnu/libbsd.so.0 (0x00007ffb7c640000)
	libgpg-error.so.0 => /lib/x86_64-linux-gnu/libgpg-error.so.0 (0x00007ffb7c42b000)

Desn’t seem there’s some DXF reading library from the system… anyway, I didn’t find any string “dxf” in all libraries names. So I can’t imagine, why you say that dxf import in your 0.9.19 version is different to mine

  tloudev@stodolar /usr/local $ grep -ri dxf LightBurn/* |grep -v lang
  Binary file LightBurn/AppRun matches
  Binary file LightBurn/LightBurn matches
  Binary file LightBurn/lib/libicudata.so.56 matches

But this library comes with LightBurn, so it should use the same behavior, shouldn’t it?

[tloudev (Ondrej Pachner)]

So, I downloaded and installed 0.9.20 right now, and teh result is still the same

[Hank (Hank Morgan)]

Looks like it opens OK in Linux Mint with LB 0.9.20

[tloudev (Ondrej Pachner)]

hmmm… so something wrong with my linux Mint Please be so kind and export it for me to lbrn, I swear this is the (first and) last time… thanks.

[LightBurn (Oz)]

LightBurn doesn’t use external libraries for file importing - I wrote all the importers from scratch.

That said, this file comes in very small, so my suspicion is that you have the DXF Auto-Close setting too high, and it’s merging vertices that shouldn’t be.

What do you have this set to?

[tloudev (Ondrej Pachner)]

HA! That’s it! I have 1.000mm tolerance. After decreasing to 0.001 the image is OK. THANK YOU BOTH guys.

[LightBurn (Oz)]

1mm is huge for that setting. I usually default it to 0.01mm, maybe 0.05mm. Personally I have my own set to zero, so things have to be exact to be joined.