You can email me if you scroll down and hit the "The Admin Guy" link. Delete the circle and then rebuild with the arc tool. Trim the circle as needed and place tangent lines. For partial (or trimmed) circles I found deleting the partial circle and rebuilding it with Tools->Curve->Center, Point, Angles created closed geometry. This happens with some geometry that uses lines tangent to circles from a point. In LibreCAD you may experience problems with imported DXF files not being closed after upgrading to WIRE, WIRE001, etc. If you're careful in your 2D program with constructing geometry, profiles should be closed. Also in Edit->Preferences->Draft General Settings tab is an internal precision level which I set to 8. From the Draft workbench in Edit->Preferences->Import-Export DXF tab there are options which I left as the defaults. To fix this I went back into LibreCAD, deleted the offending geometry and drew it again. For some reason this wasn't closed which prevented the extrusion from making a solid. In LibreCAD I had a trimmed circle that connected to vertical lines. When this is upgraded, it will generate Wire and Wire001 for each profile. The outer configuration of the clip and the hole within were my two closed profiles. In my part there are two closed profiles and I had some issues. Note that regarding importing DXF profiles, they must be closed to process properly. View the Slide Show to see photos of the repair parts. The above steps are basically the same process regardless. Your situation may vary depending on your part design. The STL file can then be used to print the part. Select this then File->Export and make sure to supply the. You'll see boolean Cut in the Model Tab window now. Give the model a name then save the project file. This will subtract out the lower extrusion from the upper one and effective cut the hole. You should reach out to PTC Creo to find out why simple DXF files work but not complex ones. There is nothing else you can change with LibreCAD and nothing you are doing wrong. Note that order makes a difference.ġ3) Use the boolean "Make a cut of two shapes" icon (blue and white overlapping circles). The magic happens when you save the file in LibreCAD, then polylines are saved as newer lwpolylines types in DXF 2007 format. Delete these if present.ġ2) Select Extrude then Extrude001. Close box with OK.ġ2) You may see extra extrusions in the model (Extrude002, Extrude003). Make sure to check Create Solid.ġ1) Set your Along distance and Z: Custom direction which can be left at -1.00 (default). Wire should be above Wire001, etc.ġ0) Select the "Extrude a selected sketch". You'll be left with Wire, Wire001, etc.Ĩ) Switch to the Part Workbench not the Part Design Workbench.ĩ) Make sure Wire and Wire001 are selected. Then select all the shapes.ħ) Then Modification->Upgrade. Delete any unnecessary points that were used in the 2D drawing. Hit the Model Tab to see all the shapes FreeCAD creates from the DXF file. I used PrusaSlicer and my i3 MK3 printer to make the part (PETG filament).Ĥ) Select Utilities->SelectPlane->Top(XY)Ħ) File->Import to bring in the LibreCAD DXF file. You can create a 3D model using FreeCAD from the 2D drawing by importing the DXF file, extruding it and applying a boolean cut for the hole. The clip has one hole in it for a spring pin. Depending on the part, this may take some time to create. I took measurements from a good OEM clip and made my 2D LibreCAD drawing from them. I needed to make some plastic clips for PLC modules that were broken. I used LibreCAD's native file format which is already DXF. The thread below explains how to import a DXF file into FreeCAD and deal with shapes that aren't closed and won't extrude. Just to be sure there was no difference I tried the first iso_test.dxf with LibreCAD 2.1.Watch the VIDEO on how the PLC clips were made. iso_test_freedraft_bereinigt.dxf This one LibreCAD 2.2.0 rc2-1 was inclined to open. Yes! I deleted the empty layers and saved it in Freedraft. I tried with NanoCAD5, yes! And I tried with Freedraft, an older simple free app. "Please test its existence and permissions". iso_test.dxf LibreCAD 2.2.0 rc2-1 (the latest) wouldn't open it. This did the job, it produced some 256 layers, the black lines on layer 0, the grey lines on layer 253. I had an old test version of an app called pdf 2 dxf. I didn't grasp Blender anyway and didn't want to spend too much time on it. It could import svg but it seemed not to show the colours, and couldn't export to dxf. I tried with Blender, a very old version so it ran on my old XP pc.
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