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Hi Marcos and Marco,please find attached the dxf that I did from scratch using 4 arcs in LibreCAD
I copied manually the path from palta2.dxf, then exported in dxf R12 The result is fine in kicad and I get a closed path also for Edge cuts. in kicad there are 4 arcs(gr_arc (start 178.564202 123.937945) (end 153.273203 83.107373) (angle -26.04011298) (layer Edge.Cuts) (width 0.1)) (gr_arc (start 156.68577 88.642784) (end 162.837792 90.749678) (angle -140.5586133) (layer Edge.Cuts) (width 0.1)) (gr_arc (start 196.246745 102.229265) (end 162.837792 90.749678) (angle -22.2858684) (layer Edge.Cuts) (width 0.1)) (gr_arc (start 148.500893 105.004408) (end 137.915937 98.354967) (angle -215.4739741) (layer Edge.Cuts) (width 0.1))
If you search inside palta2.dxf you find POLYLINE that are not supported by kicad
attached a comparison of dxf files I suspect that the problem is when exporting dxf from FreeCAD... I had some trouble with a different board path exported from FreeCAD...In FreeCAD you cannot select which version of dxf you want to use, if I remember correctly...
Maurice On 09/09/2015 07.43, Marco Hess wrote:
Definitely a problem with the DXF importer I would say as the resulting data in the PCB file are just straight line segments: (gr_line (start 42.68541 28.017695) (end 52.25 35.66) (layer Edge.Cuts) (width 0.1)) (gr_line (start 27.328145 43.265288) (end 42.68541 28.017695) (layer Edge.Cuts) (width 0.1)) (gr_line (start 50.392159 49.187096) (end 27.328145 43.265288) (layer Edge.Cuts) (width 0.1)) (gr_line (start 52.25 35.66) (end 50.392159 49.187096) (layer Edge.Cuts) (width 0.1)) Marco On 09-Sep-15 14:58, Marco Hess wrote:Hi Marcos, Apologies, but I did not see your original email where you said you tried the R12 format alreayd. I tried it as well and and it indeed seems to do something strange with just connecting the end points of the circles or something. Regards, Marco On 09-Sep-15 14:29, Marco Hess wrote:KiCad DXF import for those kind of segments don't work very well. You need to re-export the DXF in a DXF R12 format. You can do that easily by opening the DXF in LibreCAD and then reexporting in R12 format. See http://docs.kicad-pcb.org/Pcbnew/Pcbnew.html#_creating_a_board Section 6.1.2 and 6.1.3. Cheers, Marco On 09-Sep-15 14:24, Marcos Chaparro wrote:Seems that is kind of Berzier Curve, not few arcs. Probably that shape needs to split to single arcs before import. Um, I don't know if its converted to a bezier curve, but I'm sure I made it from 4 arcs, see attached. _______________________________________________ Mailing list:https://launchpad.net/~kicad-developers Post to :kicad-developers@xxxxxxxxxxxxxxxxxxx Unsubscribe :https://launchpad.net/~kicad-developers More help :https://help.launchpad.net/ListHelp-- Marco Hess Through IP Pty. Ltd. - AUSTRALIA www.through-ip.com |marco.hess@xxxxxxxxxxxxxx p: +61 407 78 55 66 | f: +61 8 8121 6191 _______________________________________________ Mailing list:https://launchpad.net/~kicad-developers Post to :kicad-developers@xxxxxxxxxxxxxxxxxxx Unsubscribe :https://launchpad.net/~kicad-developers More help :https://help.launchpad.net/ListHelp_______________________________________________ Mailing list:https://launchpad.net/~kicad-developers Post to :kicad-developers@xxxxxxxxxxxxxxxxxxx Unsubscribe :https://launchpad.net/~kicad-developers More help :https://help.launchpad.net/ListHelp-- Marco Hess Through IP Pty. Ltd. - AUSTRALIA www.through-ip.com |marco.hess@xxxxxxxxxxxxxx p: +61 407 78 55 66 | f: +61 8 8121 6191 _______________________________________________ Mailing list: https://launchpad.net/~kicad-developers Post to : kicad-developers@xxxxxxxxxxxxxxxxxxx Unsubscribe : https://launchpad.net/~kicad-developers More help : https://help.launchpad.net/ListHelp
Attachment:
potato-3.dxf
Description: image/vnd.dxf
(kicad_pcb (version 4) (host pcbnew "(2015-08-31 BZR 6138)-product")
(general
(links 0)
(no_connects 0)
(area 135.950638 82.089985 196.296746 123.987946)
(thickness 1.6)
(drawings 4)
(tracks 0)
(zones 0)
(modules 0)
(nets 1)
)
(page A4)
(layers
(0 F.Cu signal)
(1 In1.Cu signal)
(2 In2.Cu signal)
(31 B.Cu signal)
(32 B.Adhes user)
(33 F.Adhes user)
(34 B.Paste user)
(35 F.Paste user)
(36 B.SilkS user)
(37 F.SilkS user)
(38 B.Mask user)
(39 F.Mask user)
(40 Dwgs.User user)
(41 Cmts.User user)
(42 Eco1.User user)
(43 Eco2.User user)
(44 Edge.Cuts user)
)
(setup
(last_trace_width 0.3048)
(user_trace_width 0.508)
(user_trace_width 0.762)
(trace_clearance 0.254)
(zone_clearance 0.508)
(zone_45_only no)
(trace_min 0.254)
(segment_width 0.15)
(edge_width 0.15)
(via_size 0.9652)
(via_drill 0.508)
(via_min_size 0.889)
(via_min_drill 0.508)
(user_via 1.397 0.889)
(user_via 1.778 0.889)
(uvia_size 0.6604)
(uvia_drill 0.4064)
(uvias_allowed no)
(uvia_min_size 0.508)
(uvia_min_drill 0.127)
(pcb_text_width 0.3)
(pcb_text_size 1.5 1.5)
(mod_edge_width 0.18)
(mod_text_size 1.5 1.5)
(mod_text_width 0.15)
(pad_size 1.524 1.524)
(pad_drill 0.9)
(pad_to_mask_clearance 0.0762)
(aux_axis_origin 0 0)
(visible_elements 7FFFF77F)
(pcbplotparams
(layerselection 0x013fc_80000007)
(usegerberextensions false)
(excludeedgelayer true)
(linewidth 0.150000)
(plotframeref false)
(viasonmask false)
(mode 1)
(useauxorigin false)
(hpglpennumber 1)
(hpglpenspeed 20)
(hpglpendiameter 15)
(hpglpenoverlay 2)
(psnegative false)
(psa4output false)
(plotreference true)
(plotvalue true)
(plotinvisibletext false)
(padsonsilk false)
(subtractmaskfromsilk true)
(outputformat 1)
(mirror false)
(drillshape 0)
(scaleselection 1)
(outputdirectory gerb/))
)
(net 0 "")
(net_class Default "This is the default net class."
(clearance 0.254)
(trace_width 0.3048)
(via_dia 0.9652)
(via_drill 0.508)
(uvia_dia 0.6604)
(uvia_drill 0.4064)
)
(net_class PWR ""
(clearance 0.254)
(trace_width 0.762)
(via_dia 1.778)
(via_drill 0.889)
(uvia_dia 0.6604)
(uvia_drill 0.4064)
)
(net_class PWR2 ""
(clearance 0.254)
(trace_width 1.016)
(via_dia 2.286)
(via_drill 1.143)
(uvia_dia 0.6604)
(uvia_drill 0.4064)
)
(net_class mid ""
(clearance 0.254)
(trace_width 0.508)
(via_dia 1.27)
(via_drill 0.889)
(uvia_dia 0.6604)
(uvia_drill 0.4064)
)
(net_class mini ""
(clearance 0.2032)
(trace_width 0.254)
(via_dia 1.143)
(via_drill 0.762)
(uvia_dia 0.6604)
(uvia_drill 0.4064)
)
(gr_arc (start 178.564202 123.937945) (end 153.273203 83.107373) (angle -26.04011298) (layer Edge.Cuts) (width 0.1))
(gr_arc (start 156.68577 88.642784) (end 162.837792 90.749678) (angle -140.5586133) (layer Edge.Cuts) (width 0.1))
(gr_arc (start 196.246745 102.229265) (end 162.837792 90.749678) (angle -22.2858684) (layer Edge.Cuts) (width 0.1))
(gr_arc (start 148.500893 105.004408) (end 137.915937 98.354967) (angle -215.4739741) (layer Edge.Cuts) (width 0.1))
)
Attachment:
dxf-problem.png
Description: PNG image
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