On Sunday 21 March 2021 18:52:06 Dr. Nikolaus Klepp wrote: > 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.
So I'm still missing a dependency or 10. > > > > 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(); I hadn't got that far in learning openscad, msg printed for future ref thank you Nik. > 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 This is stuff you don't find in the tuts, thank you very muck 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 Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
