Hi Gene, Anno domini 2021 Sun, 21 Mar 16:30:10 -0400 Gene Heskett scripsit: > On Sunday 21 March 2021 13:45:20 Dr. Nikolaus Klepp wrote: > [...] > The whole openscad -> export menu is ghosted here. Is that nissing python > stuff? > This is also the latest openscad AppImage. Hm, just tried the Appimage, but nothing is ghosted on my computer and I can export my demo. But I usually use openscad from the devuan repositories.
> > > Cheers, Gene Heskett > > > > If your Design is 2.5D then you can cut your design in openscad with > > "projection(cut=true)". > > I looked that up and its 2d only for the newest Appimage. And what I need > to do is definitely 3 axis on the mill. Yes, it creates a 2d dxf. But you can use e.g. CamBam http://cambam.info/ if you need pocketing or dxf2gcode to create the toolpaths from the 2d dxf. Well, it's a bit strange to create a 3D object, then slice it and recreate it :) Anyway, this is what I do on easy parts. e.g.: module demo() { difference() { cube([100,100,20],center=true); translate([0,0,10]) cube([80,80,20],center=true); for (i=[0,1,2,3]) rotate([0,0,i*90]) translate([44,44,0]) cylinder(d=6,h=30,center=true); } } %demo(); projection(cut=true) demo(); Now the exported dxf has all the features to create the toolpath for the part. > > That will give you a DXF that can be fed into > > "dxf2gcode". This works for anything with planes parallel to Z (on a > > mill), but not for angled surfaces. > > > > 3D operation with pycam works, but produces most inefficient > > toolpaths. I was told that FreeCADs "Path"-Workbench is quite usable, > > but I have never done a piece on myself. > > But it does not import .stl's here. Needs a ".step" to load it here. > And if you want to play and learn somehing about freecad, steps are > loaded read-only. You can make parts disappear or reappear but you > cannot modify anything else. @Freecad STL import: this is a bit strange, but it works: Create new body menu "Import stl" --> you get "unnamed" - select that select "Part" workbench select in menu "Part->create shape from mesh" --> you get "unnamed001" - select that. select in menu "Part->convert to solid" --> you get "unnamed0001(solid)" - select that select "Part Design" Workbench select menu "Part->Create body" --> you get a new body with "Base Feature" beeing the imported stl. Now delete all things created earlier but the last body: delete "unnamed" "unnamed001" "unnamed001(solid)" - if you don't get rid of these you cannot modify the imported and coverted stl. A last you can do whatever you like with the object - e.g. add sketches, use the Path workbench ... Nik > > The latest version of pycam on sourceforge has been converted to 100% > python 3. Buster or later, maybe. I have 6.3 according to synaptic. > > > Nik > > Thank you Nik > > Cheers, Gene Heskett -- Please do not email me anything that you are not comfortable also sharing with the NSA, CIA ... _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
