Hi guys, thanks for all the comments. Concerning the corners being B Splines instead of arcs, that is the result of a lofted body being filleted and is an accurate representation of a moulded item I am reverse engineering. I tried tracing over the external geom before raising this Topic - just not accurate enough at the corners. I'm not concerned if the parametrics would be lost because the model is never going to be changed.
I was thinking that maybe the Offset macro could get me out of jail with a zero offset of the external geom, but no such luck
However, notable that other cad systems can use the external geom in a Sketch as 'normal' geometry for modelling and maintain the parametrics. Would be good if FreeCAD would allow the User to do so, even if parametrics could not be maintained.
Edit: I think this Macro: FaceToSketch is actually the answer
How to use geometry from a Body in a Sketch?
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Re: How to use geometry from a Body in a Sketch?
Alas, we are looking for solutions in FreeCAD, not other systems. And, sometimes the available solutions don't meet our expectations.ideasvacuum wrote: ↑Thu Jan 13, 2022 1:39 am ...
However, notable that other cad systems can use the external geom in a Sketch as 'normal' geometry for modelling and maintain the parametrics. Would be good if FreeCAD would allow the User to do so, even if parametrics could not be maintained....
Unfortunately, sometimes that means the user needs to resort to Python or persusing the plethora of macros available in the Addon manager, or offerings from other users.
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Re: How to use geometry from a Body in a Sketch?
FreeCad can already do it, we just need to give the User the decision as to whether the entries should be reference only or editable.Alas, we are looking for solutions in FreeCAD, not other systems.
Re: How to use geometry from a Body in a Sketch?
How that?
I remember old discussions with Abdullah about this, there may be even a ticket, but I wasn't aware that it is already possible .
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Re: How to use geometry from a Body in a Sketch?
As per my first post - works well but only produces the entities as reference. If the User could choose to use them as editable (i.e. they could be used for Pad etc) that would be great.
Re: How to use geometry from a Body in a Sketch?
Did you figure out how to do this?ideasvacuum wrote: ↑Thu Jan 20, 2022 12:51 am works well but only produces the entities as reference. If the User could choose to use them as editable (i.e. they could be used for Pad etc) that would be great.
I'm trying to fill in a gap between a base plate and a pipe turning/expanding feature, so the projection onto the sketch plane is a spline. I'm not sure how to access the control points of a reference spline so unless I can convert the reference geometry into normal sketch geometry, I'm not sure how to solve this problem.
(Im coming from solidworks, where I would go: convert entities -> edges of the loft, trim and get a shape that extrudes up to the surface of the loft, filling the 'overhang'. In freecad I can get the geometry to do this, except it's magenta splines so I'm kinda stuck)