FreeCAD Using A Master Sketch

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Sketches that extrude to multiple objects have been a source of frustration for new users of FreeCAD however this is a case of not understanding Binder and master sketches. In this short video I demonstrate how one sketch can be the basis for a complete body of multiple extrusions.

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@pavelperina7629 2 ай бұрын

Thanks. I'm learning FreeCAD right now (spent about 10 to 15 hours trying various things) and I sort of wonder if I can use binders to basically share sketches between objects. For example I have box base and lid and I want to create some ports/holes through both parts. So far I tried drawing box as a single object with split, but it's super confusing - it sort of breaks both parts and I may want to edit some features on one half and some features on both (maybe I want subtract venting slots). In the end I came to conclusion that it's likely easier - and also necessity for making snap-on edges - to make two separate solids and share some drawings, but at the same time I need to transform them (rotate, translate, mirror).

@Hotwire_RCTrix Ай бұрын

@@pavelperina7629 You can use binders to share dimensions between bodies but there are similar issues with the naming changing of topology. Sub binders don't allow you to correct for this. So use shape binders first if you think you may change the parent topology. On top of shape binders you can use Sub binders for all or parts of the shape binder. I hope that makes sense.

@schrodingerscat1863 Ай бұрын

Until they fix the topological naming issue that blows your model apart when doing something like deleting a chamfer FreeCAD is pretty much useless for serious work. Why they keep adding new features while the basics are totally broken baffles me.

@Hotwire_RCTrix Ай бұрын

@@schrodingerscat1863 I suggest you look at my short video on the topology numbering issue.

@schrodingerscat1863 Ай бұрын

@@Hotwire_RCTrix Yes, I know of this trick but it is hardly a fix when very often your model turns into a total mess after this issue strikes and is impossible to sort out. The RealThunder fork has a reasonably good fix for the problem but when that will get ported to the original project is anyone's guess. At this point I have pretty much given up on FreeCAD and moved to the RealThunder fork full time.