Freecad extrude sketch without face8/23/2023 The side window is mainly (but not completely) a cut through a face which is rotated with respect to the central part of the back of the coach, where the door is placed (with a window cut along the y axis), perpendicular to the face it is cutting. In these cases, the sketch remains attached to the surface I used as reference, the positioning of the frame extrusions is relative to it. I did similarly for the side window frames. I added a fillet on the spicky front corner. I created a sketch attached on the front face of the cabin, I drew the border of the frame extracting the borders of the cut as external geometry references, then I created an extrusion and I positioned it slightly backward with respect to the front surface. the xy plane, which is not perpendicular to the front face of the cabin). The final object is a solid with a rectangular section, running around the window borders, at some distance from the front surface, lying on the surface of the cut through section plane (i.e. Then I wanted to add a the frame to be placed inside the window cut, representing the rubber seal in the real case, where the modeler can glue the film representing the window glass. I placed the sketch at the origin of the axes, oriented it on the xz plane, created a pad long enough to intersect completely the front slopes of the cabin and cut them out from the cabin shape. The front of the cabin has two main slopes where these cutouts will be made, along the longitudinal axis of the train, which is not perpendicular to the external sloping surface. Starting from the blueprint I created the sketch of half of the front projection of the windscreen and the front lights housing. I already faced some challenging issues related to the positioning and orientation of pads and extrusions, as well as the detachment of sketches from surfaces and their repositioning: the front window of the cabin, the right side window of the back, the side windows of the body. the model of the Mk3 coaches that go together with the locomotive to have and make up the complete train set.Īs the workbenches in FreeCAD are not meant exactly for this approach, the creation of my 3D objects data base was not straightforward: I had to find some tricks and workarounds.the same locomotive with varying level of details for different modeling kits, and.different versions of the locomotive (e.g.My goal was to have a set of reusable single objects that I could plug in a new data base (a so called “project” in FreeCAD) in order to create: I started with the basic full shape, then I added the cuts for the windows, the cuts for the grids, and finally the handrails and roof details. While modelling the Class 43 IC 125 HST locomotive I decided to create an object data base as modular as possible: three basic objects (the cabin, the body, the back end), each of them in multiple, different version. Which is sometime time consume.FreeCAD: pad,extrusions and sketches detachment from objects and positioning It seem no possible to change it after draw in screen only change in data properties. Since in draft I try to drag, to double click endpoint or edge. In sketcher I just drag endpoint or edge of line/rectangle then it change. In draft can I change position of line? Or shape of rectangle? I curious why draft not separate trim function individual than to group it into one command trimex (trim, extend, extrude). No need delete face then trimex (to extrude).Īlso I face abnormal behavior of trimex for trim line in draft (hard to trim to what I want, with confuse of mixture press of ctrl, shift, alt, where position of mouse in use) but no problem straightforward and clear use of trim in sketcher. I can immediately use part design to pad a select sketch (to extrude). Since in your example rectangle and circle if I create in sketcher. It seem to me sketcher is more advance than draft. In your DXF, there are 10 closed profiles: Draft can only create a face from a single closed profile.
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